irqchip: add irq-omap-intc.h header

OMAP INTC irqchip driver will be moved under
drivers/irqchip/ soon but we still have a dependency
with mach-omap2 when it comes to idle functions.

In order to make it easy to share those function
prototypes with OMAP PM code, we introduce this new
header.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --cc arch/arm/mach-omap2/board-3430sdp.c
Simple merge

diff --cc arch/arm/mach-omap2/board-am3517crane.c
Simple merge

diff --cc arch/arm/mach-omap2/board-am3517evm.c
Simple merge

diff --cc arch/arm/mach-omap2/board-cm-t35.c
Simple merge

diff --cc arch/arm/mach-omap2/board-cm-t3517.c
Simple merge

diff --cc arch/arm/mach-omap2/board-devkit8000.c
Simple merge

diff --cc arch/arm/mach-omap2/board-ldp.c
Simple merge

diff --cc arch/arm/mach-omap2/board-omap3beagle.c
Simple merge

diff --cc arch/arm/mach-omap2/board-omap3logic.c
Simple merge

diff --cc arch/arm/mach-omap2/board-omap3pandora.c
Simple merge

diff --cc arch/arm/mach-omap2/board-omap3stalker.c
Simple merge

diff --cc arch/arm/mach-omap2/board-omap3touchbook.c
Simple merge

diff --cc arch/arm/mach-omap2/board-overo.c
Simple merge

diff --cc arch/arm/mach-omap2/board-rx51.c
Simple merge

diff --cc arch/arm/mach-omap2/board-ti8168evm.c
Simple merge

diff --cc arch/arm/mach-omap2/common.h
Simple merge

diff --cc arch/arm/mach-omap2/cpuidle34xx.c
Simple merge

diff --cc arch/arm/mach-omap2/irq.c
Simple merge

diff --cc arch/arm/mach-omap2/pm24xx.c
Simple merge

diff --cc arch/arm/mach-omap2/pm34xx.c
Simple merge

diff --cc include/linux/irqchip/irq-omap-intc.h
Simple merge