asm/system.h: um: arch_align_stack() moved to asm/exec.h

arch_align_stack() moved to asm/exec.h, so change the comment referring to
asm/system.h which no longer exists.

Signed-off-by: David Howells <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
1 file changed