Hexagon: Add user access functions

Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --cc arch/hexagon/include/asm/uaccess.h
Simple merge

diff --cc arch/hexagon/mm/copy_from_user.S
Simple merge

diff --cc arch/hexagon/mm/copy_to_user.S
Simple merge

diff --cc arch/hexagon/mm/copy_user_template.S
Simple merge

diff --cc arch/hexagon/mm/strnlen_user.S
Simple merge

diff --cc arch/hexagon/mm/uaccess.c
Simple merge