x86: introduce asm helpers in local_{32|64}.h

Handle the use of long on X86_32 and quad on X86_64

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>