[ARM] Move enable_irq and disable_irq to assembler.h

5d25ac038a317d454a4321cba955f756400835a5 broke VFP builds due to
enable_irq not being defined as an assembly macro.  Move it to
assembler.h so everyone can use it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
3 files changed