ARM: OMAP2: Prepare cpu detection for further improvements

Rename omap2_check_revision to omap24xx_check_revision.
Then next patch will split if further and add omap34xx_check_revision.

Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/id.c

@@ -191,7 +191,7 @@ static void __init _set_omap_chip(void)
 
 }
 
-void __init omap2_check_revision(void)
+void __init omap24xx_check_revision(void)
 {
 	int i, j;
 	u32 idcode;
@@ -266,6 +266,11 @@ void __init omap2_check_revision(void)
 
 }
 
+void __init omap2_check_revision(void)
+{
+	omap24xx_check_revision();
+}
+
 void __init omap2_set_globals_tap(struct omap_globals *omap2_globals)
 {
 	class = omap2_globals->class;