x86: Move GOT_TLS_* in elf32-i386.c to elfxx-x86.h

x86: Move GOT_TLS_* in elf32-i386.c to elfxx-x86.h

elf64-x86-64.c can use GOT_TLS_* definitions in elf32-i386.c with
GOT_TLS_IE_POS, GOT_TLS_IE_NEG and GOT_TLS_IE_BOTH unused.

	* elf32-i386.c (GOT_TLS_IE, GOT_TLS_IE_POS, GOT_TLS_IE_NEG,
	GOT_TLS_IE_BOTH, GOT_TLS_GDESC, GOT_TLS_GD_BOTH_P,
	GOT_TLS_GD_P, GOT_TLS_GDESC_P, GOT_TLS_GD_ANY_P): Moved to ...
	* elfxx-x86.h (GOT_TLS_IE, GOT_TLS_IE_POS, GOT_TLS_IE_NEG,
	GOT_TLS_IE_BOTH, GOT_TLS_GDESC, GOT_TLS_GD_BOTH_P,
	GOT_TLS_GD_P, GOT_TLS_GDESC_P, GOT_TLS_GD_ANY_P): Here.
	* elf64-x86-64.c (GOT_TLS_IE, GOT_TLS_GDESC, GOT_TLS_GD_BOTH_P,
	GOT_TLS_GD_P, GOT_TLS_GDESC_P, GOT_TLS_GD_ANY_P): Removed.