ARM: OMAP: Introduce SoC specific early_init

Introduce them for each omap variant and just make them all call
omap2_init_common_infrastructure for now. Do this for each board-*.c
file except for board-generic and board-omap3beagle as they use
the same machine ID for multiple SoCs.

No functional changes.

Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/board-h4.c b/arch/arm/mach-omap2/board-h4.c
index 84ca5c0..948fde0 100644
--- a/arch/arm/mach-omap2/board-h4.c
+++ b/arch/arm/mach-omap2/board-h4.c
@@ -290,11 +290,6 @@
 	{ OMAP_TAG_LCD,		&h4_lcd_config },
 };
 
-static void __init omap_h4_init_early(void)
-{
-	omap2_init_common_infrastructure();
-}
-
 static void __init omap_h4_init_irq(void)
 {
 	omap2_init_irq();
@@ -385,7 +380,7 @@
 	.boot_params	= 0x80000100,
 	.reserve	= omap_reserve,
 	.map_io		= omap_h4_map_io,
-	.init_early	= omap_h4_init_early,
+	.init_early	= omap2420_init_early,
 	.init_irq	= omap_h4_init_irq,
 	.init_machine	= omap_h4_init,
 	.timer		= &omap2_timer,