CSKY: Fix and add some instructions for VDSPV1.

CSKY: Fix and add some instructions for VDSPV1.

gas/
	* config/tc-csky.c (get_operand_value): Add handler for
	OPRND_TYPE_IMM5b_VSH and OPRND_TYPE_VREG_WITH_INDEX.
	* testsuite/gas/csky/csky_vdsp.d : Fix the disassembling
	for vector register.

opcodes/
	* csky-dis.c (csky_output_operand): Add handler for
	OPRND_TYPE_IMM5b_VSH and OPRND_TYPE_VREG_WITH_INDEX.
	* csky-opc.h (OPRND_TYPE_VREG_WITH_INDEX): New enum.
	(OPRND_TYPE_IMM5b_VSH): New enum.
	(csky_v2_opcodes): Fix and add some instructions for VDSPV1.

Change-Id: Ia5675d7b716fe5c331e6121ad8f83061ef6454bb