* gas/config/tc-arm.c (NEON_ENC_TAB): Add vmaxnm, vminnm entries.

	* gas/config/tc-arm.c (NEON_ENC_TAB): Add vmaxnm, vminnm entries.
	(vfp_or_neon_is_neon_bits): Add NEON_CHECK_ARCH8 enumerator.
	(vfp_or_neon_is_neon): Add check for SIMD for ARMv8.
	(do_maxnm): New function.
	(insns): Add vmaxnm, vminnm entries.
	* gas/testsuite/gas/testsuite/gas/armv8-a+fp.d: Update testcase.
	* gas/testsuite/gas/testsuite/gas/armv8-a+fp.s: Likewise.
	* gas/testsuite/gas/testsuite/gas/armv8-a+simd.d: New testcase.
	* gas/testsuite/gas/testsuite/gas/armv8-a+simd.s: Likewise.
	* opcodes/arm-dis.c (coprocessor_opcodes): Add VMAXNM/VMINNM.
	(neon_opcodes): Likewise.