elf/elf.h: Add missing Meta relocations

2016-07-19   Will Newton  <will.newton@gmail.com>

	* elf/elf.h (R_METAG_REL8, R_METAG_REL16, R_METAG_TLS_GD
	R_METAG_TLS_LDM, R_METAG_TLS_LDO_HI16, R_METAG_TLS_LDO_LO16,
	R_METAG_TLS_LDO, R_METAG_TLS_IE, R_METAG_TLS_IENONPIC,
	R_METAG_TLS_IENONPIC_HI16, R_METAG_TLS_IENONPIC_LO16,
	R_METAG_TLS_LE, R_METAG_TLS_LE_HI16, R_METAG_TLS_LE_LO16): New.