* gas/mips/e32-rel2.d, gas/mips/e32-rel4.d: Use -mabi=32 for as.

	* gas/mips/mips.exp: Move mips16e testcase to ELF only tests.
	Run elf{el}-rel2 and elf-rel4 for all arches with gpr64. Run
	e32-rel2 and e32-rel4 also for 64 bit configurations.