[ARM] Improve indentation of ARM architecture declarations

[ARM] Improve indentation of ARM architecture declarations

This commit cleans up indentation of ARM architecture declaration,
namely entries of arm_archs and definition of macros ARM_EXT_*,
ARM_AEXT_*, ARM_AEXT2_*, FPU_EXT_*, FPU_ARCH_* and ARM_ARCH_*. It also
gets rid of unused ARM_ARCH_V6M-ONLY and merge AEM_AEXT_V6M_ONLY in
ARM_AEXT_V6M now sole user.

gas/
2018-11-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/tc-arm.c (arm_archs): Reindent.

include/
2018-11-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* opcode/arm.h (ARM_AEXT_V6M_ONLY): Merge into its use in ARM_AEXT_V6M.
	(ARM_ARCH_V6M_ONLY): Remove.
	(ARM_EXT_V1, ARM_EXT_V2, ARM_EXT_V2S, ARM_EXT_V3, ARM_EXT_V3M,
	ARM_EXT_V4, ARM_EXT_V4T, ARM_EXT_V5, ARM_EXT_V5T, ARM_EXT_V5ExP,
	ARM_EXT_V5E, ARM_EXT_V5J, ARM_EXT_V6, ARM_EXT_V6K, ARM_EXT_V8,
	ARM_EXT_V6T2, ARM_EXT_DIV, ARM_EXT_V5E_NOTM, ARM_EXT_V6_NOTM,
	ARM_EXT_V7, ARM_EXT_V7A, ARM_EXT_V7R, ARM_EXT_V7M, ARM_EXT_V6M,
	ARM_EXT_BARRIER, ARM_EXT_THUMB_MSR, ARM_EXT_V6_DSP, ARM_EXT_MP,
	ARM_EXT_SEC, ARM_EXT_OS, ARM_EXT_ADIV, ARM_EXT_VIRT, ARM_EXT2_PAN,
	ARM_EXT2_V8_2A, ARM_EXT2_V8M, ARM_EXT2_ATOMICS, ARM_EXT2_V6T2_V8M,
	ARM_EXT2_FP16_INST, ARM_EXT2_V8M_MAIN, ARM_EXT2_RAS, ARM_EXT2_V8_3A,
	ARM_EXT2_V8A, ARM_EXT2_V8_4A, ARM_EXT2_FP16_FML, ARM_EXT2_V8_5A,
	ARM_EXT2_SB, ARM_EXT2_PREDRES, ARM_CEXT_XSCALE, ARM_CEXT_MAVERICK,
	ARM_CEXT_IWMMXT, ARM_CEXT_IWMMXT2, FPU_ENDIAN_PURE, FPU_ENDIAN_BIG,
	FPU_FPA_EXT_V1, FPU_FPA_EXT_V2, FPU_MAVERICK, FPU_VFP_EXT_V1xD,
	FPU_VFP_EXT_V1, FPU_VFP_EXT_V2, FPU_VFP_EXT_V3xD, FPU_VFP_EXT_V3,
	FPU_NEON_EXT_V1, FPU_VFP_EXT_D32, FPU_VFP_EXT_FP16, FPU_NEON_EXT_FMA,
	FPU_VFP_EXT_FMA, FPU_VFP_EXT_ARMV8, FPU_NEON_EXT_ARMV8,
	FPU_CRYPTO_EXT_ARMV8, CRC_EXT_ARMV8, FPU_VFP_EXT_ARMV8xD,
	FPU_NEON_EXT_RDMA, FPU_NEON_EXT_DOTPROD, ARM_AEXT_V1, ARM_AEXT_V2,
	ARM_AEXT_V2S, ARM_AEXT_V3, ARM_AEXT_V3M, ARM_AEXT_V4xM, ARM_AEXT_V4,
	ARM_AEXT_V4TxM, ARM_AEXT_V4T, ARM_AEXT_V5xM, ARM_AEXT_V5,
	ARM_AEXT_V5TxM, ARM_AEXT_V5T, ARM_AEXT_V5TExP, ARM_AEXT_V5TE,
	ARM_AEXT_V5TEJ, ARM_AEXT_V6, ARM_AEXT_V6K, ARM_AEXT_V6Z, ARM_AEXT_V6KZ,
	ARM_AEXT_V6T2, ARM_AEXT_V6KT2, ARM_AEXT_V6ZT2, ARM_AEXT_V6KZT2,
	ARM_AEXT_V7_ARM, ARM_AEXT_V7A, ARM_AEXT_V7VE, ARM_AEXT_V7R,
	ARM_AEXT_NOTM, ARM_AEXT_V6M_ONLY, ARM_AEXT_V6M, ARM_AEXT_V6SM,
	ARM_AEXT_V7M, ARM_AEXT_V7, ARM_AEXT_V7EM, ARM_AEXT_V8A, ARM_AEXT2_V8A,
	ARM_AEXT2_V8_1A, ARM_AEXT2_V8_2A, ARM_AEXT2_V8_3A, ARM_AEXT2_V8_4A,
	ARM_AEXT2_V8_5A, ARM_AEXT_V8M_BASE, ARM_AEXT_V8M_MAIN,
	ARM_AEXT_V8M_MAIN_DSP, ARM_AEXT2_V8M, ARM_AEXT2_V8M_BASE,
	ARM_AEXT2_V8M_MAIN, ARM_AEXT2_V8M_MAIN_DSP, ARM_AEXT_V8R,
	ARM_AEXT2_V8R, FPU_VFP_V1xD, FPU_VFP_V1, FPU_VFP_V2, FPU_VFP_V3D16,
	FPU_VFP_V3, FPU_VFP_V3xD, FPU_VFP_V4D16, FPU_VFP_V4, FPU_VFP_V4_SP_D16,
	FPU_VFP_V5D16, FPU_VFP_ARMV8, FPU_NEON_ARMV8, FPU_CRYPTO_ARMV8,
	FPU_VFP_HARD, FPU_FPA, FPU_ARCH_VFP, FPU_ARCH_FPE, FPU_ARCH_FPA,
	FPU_ARCH_VFP_V1xD, FPU_ARCH_VFP_V1, FPU_ARCH_VFP_V2,
	FPU_ARCH_VFP_V3D16_FP16, FPU_ARCH_VFP_V3, FPU_ARCH_VFP_V3_FP16,
	FPU_ARCH_VFP_V3xD_FP16, FPU_ARCH_NEON_V1, FPU_ARCH_VFP_V3_PLUS_NEON_V1,
	FPU_ARCH_NEON_FP16, FPU_ARCH_VFP_HARD, FPU_ARCH_VFP_V4,
	FPU_ARCH_VFP_V4D16, FPU_ARCH_VFP_V4_SP_D16, FPU_ARCH_VFP_V5D16,
	FPU_ARCH_VFP_V5_SP_D16, FPU_ARCH_NEON_VFP_V4, FPU_ARCH_VFP_ARMV8,
	FPU_ARCH_NEON_VFP_ARMV8, FPU_ARCH_CRYPTO_NEON_VFP_ARMV8,
	FPU_ARCH_CRYPTO_NEON_VFP_ARMV8_DOTPROD, ARCH_CRC_ARMV8,
	FPU_ARCH_NEON_VFP_ARMV8_1, FPU_ARCH_CRYPTO_NEON_VFP_ARMV8_1,
	FPU_ARCH_DOTPROD_NEON_VFP_ARMV8, ARM_ARCH_V1, ARM_ARCH_V2,
	ARM_ARCH_V2S, ARM_ARCH_V3, ARM_ARCH_V3M, ARM_ARCH_V4xM, ARM_ARCH_V4,
	ARM_ARCH_V4TxM, ARM_ARCH_V4T, ARM_ARCH_V5xM, ARM_ARCH_V5,
	ARM_ARCH_V5TxM, ARM_ARCH_V5T, ARM_ARCH_V5TExP, ARM_ARCH_V5TE,
	ARM_ARCH_V5TEJ, ARM_ARCH_V6, ARM_ARCH_V6K, ARM_ARCH_V6Z, ARM_ARCH_V6KZ,
	ARM_ARCH_V6T2, ARM_ARCH_V6KT2, ARM_ARCH_V6ZT2, ARM_ARCH_V6KZT2,
	ARM_ARCH_V6M, ARM_ARCH_V6SM, ARM_ARCH_V7, ARM_ARCH_V7A, ARM_ARCH_V7VE,
	ARM_ARCH_V7R, ARM_ARCH_V7M, ARM_ARCH_V7EM, ARM_ARCH_V8A,
	ARM_ARCH_V8A_CRC, ARM_ARCH_V8_1A, ARM_ARCH_V8_2A, ARM_ARCH_V8_3A,
	ARM_ARCH_V8_4A, ARM_ARCH_V8_5A, ARM_ARCH_V8M_BASE, ARM_ARCH_V8M_MAIN,
	ARM_ARCH_V8M_MAIN_DSP, ARM_ARCH_V8R): Reindent.