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/include/mach/board-zoom.h b/arch/arm/mach-omap2/include/mach/board-zoom.h
new file mode 100644
index 0000000..c93b29e
--- /dev/null
+++ b/arch/arm/mach-omap2/include/mach/board-zoom.h
@@ -0,0 +1,5 @@
+/*
+ * Defines for zoom boards
+ */
+extern int __init zoom_debugboard_init(void);
+extern void __init zoom_peripherals_init(void);