ARM: OMAP: remove deprecated IRQF_DISABLED

This patch proposes to remove the IRQF_DISABLED flag from OMAP code
It's a NOOP since 2.6.35, and will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>