Several C files in arch/arm/mach-omap* and arch/arm/plat-omap declare
functions that are used by other files, but don't include the header
file where the prototype is declared.  This results in the following
warnings from sparse:

    arch/arm/mach-omap2/irq.c:114:5: warning: symbol 'omap_irq_pending' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:186:13: warning: symbol 'omap2_init_irq' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:191:13: warning: symbol 'omap3_init_irq' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:196:13: warning: symbol 'ti81xx_init_irq' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:233:39: warning: symbol 'omap2_intc_handle_irq' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:242:6: warning: symbol 'omap_intc_save_context' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:265:6: warning: symbol 'omap_intc_restore_context' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:291:6: warning: symbol 'omap3_intc_suspend' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:297:6: warning: symbol 'omap3_intc_prepare_idle' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:306:6: warning: symbol 'omap3_intc_resume_idle' was not declared. Should it be static?
    arch/arm/mach-omap2/irq.c:312:39: warning: symbol 'omap3_intc_handle_irq' was not declared. Should it be static?
    arch/arm/mach-omap2/omap-secure.c:59:12: warning: symbol 'omap_secure_ram_reserve_memblock' was not declared. Should it be static?
    arch/arm/mach-omap2/board-zoom-display.c:133:13: warning: symbol 'zoom_display_init' was not declared. Should it be static?
    arch/arm/plat-omap/common.c:73:13: warning: symbol 'omap_init_consistent_dma_size' was not declared. Should it be static?
    arch/arm/mach-omap1/irq.c:61:5: warning: symbol 'omap_irq_flags' was not declared. Should it be static?
    arch/arm/mach-omap1/irq.c:179:13: warning: symbol 'omap1_init_irq' was not declared. Should it be static?
    arch/arm/mach-omap1/reset.c:11:6: warning: symbol 'omap1_restart' was not declared. Should it be static?

Fix by including the appropriate header files.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Senthilvadivu Guruswamy <svadivu@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>