Assembler fix
Assembler fix

Unlike pc-relative loads and branches, arithmetic operations using
the program counter do not implicitly word-align pc+4, but rather use
(current pc + 4) without alignment as the source.

Change-Id: If9a7eee8614c04f513fa5593fe9d58dd429f9023

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst