Add NT_GNU_PROPERTY_TYPE_0 macros

Add macros used in GNU .note.gnu.property notes (NT_GNU_PROPERTY_TYPE_0).

	* elf/elf.h (NT_GNU_PROPERTY_TYPE_0): New.
	(NOTE_GNU_PROPERTY_SECTION_NAME): Likewise.
	(GNU_PROPERTY_STACK_SIZE): Likewie.
	(GNU_PROPERTY_NO_COPY_ON_PROTECTED): Likewie.
	(GNU_PROPERTY_LOPROC): Likewise.
	(GNU_PROPERTY_HIPROC): Likewise.
	(GNU_PROPERTY_LOUSER): Likewise.
	(GNU_PROPERTY_HIUSER): Likewise.
	(GNU_PROPERTY_X86_ISA_1_USED): Likwise.
	(GNU_PROPERTY_X86_ISA_1_NEEDED): Likwise.
	(GNU_PROPERTY_X86_FEATURE_1_AND): Likwise.
	(GNU_PROPERTY_X86_ISA_1_486): Likwise.
	(GNU_PROPERTY_X86_ISA_1_586): Likwise.
	(GNU_PROPERTY_X86_ISA_1_686): Likwise.
	(GNU_PROPERTY_X86_ISA_1_SSE): Likwise.
	(GNU_PROPERTY_X86_ISA_1_SSE2): Likwise.
	(GNU_PROPERTY_X86_ISA_1_SSE3): Likwise.
	(GNU_PROPERTY_X86_ISA_1_SSSE3): Likwise.
	(GNU_PROPERTY_X86_ISA_1_SSE4_1): Likwise.
	(GNU_PROPERTY_X86_ISA_1_SSE4_2): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX2): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX512F): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX512CD): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX512ER): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX512PF): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX512VL): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX512DQ): Likwise.
	(GNU_PROPERTY_X86_ISA_1_AVX512BW): Likwise.
	(GNU_PROPERTY_X86_FEATURE_1_IBT): Likwise.
	(GNU_PROPERTY_X86_FEATURE_1_SHSTK): Likwise.