[PowerPC VLE] Add LSP (Lightweight Signal Processing) instruction support

[PowerPC VLE] Add LSP (Lightweight Signal Processing) instruction support

include/
	* opcode/ppc.h (PPC_OPCODE_LSP): New define.
opcodes/
	* ppc-opc.c (insert_evuimm2_ex0): New function.
	(extract_evuimm2_ex0): Likewise.
	(insert_evuimm4_ex0): Likewise.
	(extract_evuimm4_ex0): Likewise.
	(insert_evuimm8_ex0): Likewise.
	(extract_evuimm8_ex0): Likewise.
	(insert_evuimm_lt16): Likewise.
	(extract_evuimm_lt16): Likewise.
	(insert_rD_rS_even): Likewise.
	(extract_rD_rS_even): Likewise.
	(insert_off_lsp): Likewise.
	(extract_off_lsp): Likewise.
	(RD_EVEN): New operand.
	(RS_EVEN): Likewise.
	(RSQ): Adjust.
	(EVUIMM_LT16): New operand.
	(HTM_SI): Adjust.
	(EVUIMM_2_EX0): New operand.
	(EVUIMM_4): Adjust.
	(EVUIMM_4_EX0): New operand.
	(EVUIMM_8): Adjust.
	(EVUIMM_8_EX0): New operand.
	(WS): Adjust.
	(VX_OFF): New operand.
	(VX_LSP): New macro.
	(VX_LSP_MASK): Likewise.
	(VX_LSP_OFF_MASK): Likewise.
	(PPC_OPCODE_LSP): Likewise.
	(vle_opcodes): Add LSP opcodes.
	* ppc-dis.c (ppc_mopt): Add PPC_OPCODE_LSP flag to "vle" entry.
gas/
	* testsuite/gas/ppc/lsp-checks.d,
	* testsuite/gas/ppc/lsp-checks.l,
	* testsuite/gas/ppc/lsp-checks.s: New test.
	* testsuite/gas/ppc/lsp.d,
	* testsuite/gas/ppc/lsp.s: New test.
	* testsuite/gas/ppc/ppc.exp: Run new tests.