MIPS: Fix double inclusion of headers in misalignment emulator.

Introduced in 34c2f668d0f6b2ca1c076d8170d6cd4f2235a9d4 (MIPS: microMIPS:
Add unaligned access support.)

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --cc arch/mips/kernel/unaligned.c
Simple merge