target/ppc: Move logical fixed-point instructions to decodetree.

target/ppc: Move logical fixed-point instructions to decodetree.

Moving the below instructions to decodetree specification :

	andi[s]., {ori, xori}[s]			: D-form

	{and, andc, nand, or, orc, nor, xor, eqv}[.],
	exts{b, h, w}[.],  cnt{l, t}z{w, d}[.],
	popcnt{b, w, d},  prty{w, d}, cmp, bpermd	: X-form

With this patch, all the fixed-point logical instructions have been
moved to decodetree.
The changes were verified by validating that the tcg ops generated by those
instructions remain the same, which were captured with the '-d in_asm,op' flag.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Chinmay Rath <rathc@linux.ibm.com>
[np: 32-bit compile fix]
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>