omap3: zoom: rename zoom2 name to generic zoom

Replace zoom2 with zoom name in board-zoom-peripherals.c file
and board-zoom-debugboard.c. Create mach/board-zoom.h.

This file has functions reused for boards: Zoom2/Zoom3/sdp3630.
Hence have all functions commonly named as zoom

Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c
index 31d485b..2f980e3 100644
--- a/arch/arm/mach-omap2/board-zoom2.c
+++ b/arch/arm/mach-omap2/board-zoom2.c
@@ -21,6 +21,8 @@
 #include <plat/common.h>
 #include <plat/board.h>
 
+#include <mach/board-zoom.h>
+
 #include "sdram-micron-mt46h32m32lf-6.h"
 
 static void __init omap_zoom2_init_irq(void)
@@ -56,13 +58,10 @@
 
 #endif
 
-extern int __init omap_zoom2_debugboard_init(void);
-extern void __init zoom_peripherals_init(void);
-
 static void __init omap_zoom2_init(void)
 {
 	zoom_peripherals_init();
-	omap_zoom2_debugboard_init();
+	zoom_debugboard_init();
 }
 
 static void __init omap_zoom2_map_io(void)