RTEMS: Add riscv multilibs

gcc/ChangeLog:

	* config/riscv/t-rtems: Add -mstrict-align multilibs for
	targets without support for misaligned access in hardware.

(cherry picked from commit 73a2a9d6c2eab34b2a1f83a1c4286c87a9586b84)
1 file changed