omap1: Add initcall checks for omap1 and booted board

Otherwise multi-omap1 configurations will fail.

Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap1/devices.c b/arch/arm/mach-omap1/devices.c
index 86ad38a..b0f4c23 100644
--- a/arch/arm/mach-omap1/devices.c
+++ b/arch/arm/mach-omap1/devices.c
@@ -288,6 +288,9 @@
  */
 static int __init omap1_init_devices(void)
 {
+	if (!cpu_class_is_omap1())
+		return -ENODEV;
+
 	/* please keep these calls, and their implementations above,
 	 * in alphabetical order so they're easier to sort through.
 	 */