at91sam7s_support.h: add interrupts_enabled()
at91sam7s_support.h: add interrupts_enabled()

johnkingsley/aprinter,ambrop72/aprinter,fixator/aprinter,fixator/aprinter,fixator/aprinter,johnkingsley/aprinter,ambrop72/aprinter,johnkingsley/aprinter,johnkingsley/aprinter,ambrop72/aprinter,fixator/aprinter,johnkingsley/aprinter,fixator/aprinter,ambrop72/aprinter,johnkingsley/aprinter,ambrop72/aprinter,fixator/aprinter,ambrop72/aprinter,johnkingsley/aprinter,ambrop72/aprinter