CSKY: Change ISA flag's type to bfd_uint64_t and fix build error.

CSKY: Change ISA flag's type to bfd_uint64_t and fix build error.

The previous patch missed one modification.
Following is the error message:
gas/config/tc-csky.c:806:5: error: 'CSKY_ARCH_804' undeclared here
(not in a function); did you mean 'CSKY_ARCH_807'?

include/
	* opcode/csky.h (CSKYV1_ISA_E1): Convert to bfd_uint64_t type.
	(CSKYV2_ISA_E1): Likewise.
	(CSKYV2_ISA_1E2): Likewise.
	(CSKYV2_ISA_2E3): Likewise.
	(CSKYV2_ISA_3E7): Likewise.
	(CSKYV2_ISA_7E10): Likewise.
	(CSKYV2_ISA_3E3R1): Likewise.
	(CSKYV2_ISA_3E3R2): Likewise.
	(CSKYV2_ISA_10E60): Likewise.
	(CSKYV2_ISA_3E3R3): Likewise.
	(CSKY_ISA_TRUST): Likewise.
	(CSKY_ISA_CACHE): Likewise.
	(CSKY_ISA_NVIC): Likewise.
	(CSKY_ISA_CP): Likewise.
	(CSKY_ISA_MP): Likewise.
	(CSKY_ISA_MP_1E2): Likewise.
	(CSKY_ISA_JAVA): Likewise.
	(CSKY_ISA_MAC): Likewise.
	(CSKY_ISA_MAC_DSP): Likewise.
	(CSKY_ISA_DSP): Likewise.
	(CSKY_ISA_DSP_1E2): Likewise.
	(CSKY_ISA_DSP_ENHANCE): Likewise.
	(CSKY_ISA_DSPE60): Likewise.
	(CSKY_ISA_FLOAT_E1): Likewise.
	(CSKY_ISA_FLOAT_1E2): Likewise.
	(CSKY_ISA_FLOAT_1E3): Likewise.
	(CSKY_ISA_FLOAT_3E4): Likewise.
	(CSKY_ISA_FLOAT_7E60): Likewise.
	(CSKY_ISA_VDSP): Likewise.
	(CSKY_ISA_VDSP_2): Likewise.
	(CSKY_ARCH_804): Define.
	(CSKY_ARCH_805): Define.
	(CSKY_ARCH_800): Define.