PowerPC VLE extended instructions in powerpc_macros

This moves VLE insn out of the macro table.  "e_slwi" and "e_srwi"
already exist in vle_opcodes as distinct instructions rather than
encodings of e_rlwinm.

opcodes/
	* ppc-opc.c (vle_opcodes): Typo fix e_rlwinm operand.
	Add "e_inslwi", "e_insrwi", "e_rotlwi", "e_rotrwi", "e_clrlwi",
	"e_clrrwi", "e_extlwi", "e_extrwi", and "e_clrlslwi".
	(powerpc_macros): Delete same.  Delete "e_slwi" and "e_srwi" too.
gas/
	* testsuite/gas/ppc/vle-simple-5.d: Update.