PR24028, PPC_INT_FMT

PR24028, PPC_INT_FMT

PPC_INT_FMT is redundant now that bfd.h pulls in inttypes.h if
available.  Apparently MacOS Mojave defines int64_t as long long even
though long is also 64 bits, which confuses the logic selecting
PPC_INT_FMT (and BFD_PRI64 too).  Hopefully inttypes.h is available on
Mojave.

	PR 24028
include/
	* opcode/ppc.h (PPC_INT_FMT): Delete.
opcodes/
	* ppc-dis.c (print_insn_powerpc): Replace PPC_INT_FMT uses with
	PRId64/PRIx64.