ARMv8 adds a new variant to the VMULL instruction in A32/T32.

This patch adds support for this instruction.

gas/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* config/tc-arm.c (neon_type_mask): Add P64 type.
	(type_chk_of_el_type): Handle P64 type.
	(el_type_of_type_chk): Likewise.
	(do_neon_vmull): Handle VMULL.P64.

gas/testsuite/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* gas/arm/armv8-a+crypto.d: Update testcase.
	* gas/arm/armv8-a+crypto.s: Likewise.

opcodes/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* arm-dis.c (neon_opcodes): Handle VMULL.P64.