Fixup broken UML build due to 7d12e780e003f93433d49ce78cfedf4b4c52adc5
"IRQ: Maintain regs pointer globally rather than passing to IRQ handlers".
Cc: David Howells
Cc: Jeff Dike
Cc: Paolo "Blaisorblade" Giarrusso
Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds