Support Intel PBNDKB

Support Intel PBNDKB

gas/ChangeLog:

	* NEWS: Support Intel PBNDKB.
	* config/tc-i386.c: Add pbndkb.
	* doc/c-i386.texi: Document .pbndkb.
	* testsuite/gas/i386/i386.exp: Add PBNDKB tests.
	* testsuite/gas/i386/x86-64.exp: Ditto.
	* testsuite/gas/i386/pbndkb-inval.l: New test.
	* testsuite/gas/i386/pbndkb-inval.s: Ditto.
	* testsuite/gas/i386/x86-64-pbndkb-intel.d: Ditto.
	* testsuite/gas/i386/x86-64-pbndkb.d: Ditto.
	* testsuite/gas/i386/x86-64-pbndkb.s: Ditto.

opcodes/ChangeLog:

	* i386-dis.c (X86_64_0F01_REG_0_MOD_3_RM_7): New.
	(X86_64_0F01_REG_0_MOD_3_RM_7_P_0): Ditto.
	(prefix_table): Add PREFIX_0F01_REG_0_MOD_3_RM_7.
	(x86_64_table): Add X86_64_0F01_REG_0_MOD_3_RM_7_P_0.
	(rm_table): New entry for pbndkb.
	* i386-gen.c (cpu_flag): Add PBNDKB.
	* i386-init.h: Regenerated.
	* i386-mnem.h: Ditto.
	* i386-opc.h (CpuPBNDKB): New.
	(i386_cpu_flags): Add cpupbndkb.
	* i386-opc.tbl: Add PBNDKB instructions.
	* i386-tbl.h: Regenerated.