ep93xx: Remove unnecessary includes of ep93xx-regs.h

Remove the include of ep93xx-regs.h from files which no longer need
it, notably include/mach/hardware.h.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: Hartley Sweeten <hsweeten@visionengravers.com>
diff --git a/arch/arm/mach-ep93xx/soc.h b/arch/arm/mach-ep93xx/soc.h
index d9b01a7..979fba7 100644
--- a/arch/arm/mach-ep93xx/soc.h
+++ b/arch/arm/mach-ep93xx/soc.h
@@ -13,6 +13,8 @@
 #ifndef _EP93XX_SOC_H
 #define _EP93XX_SOC_H
 
+#include <mach/ep93xx-regs.h>
+
 /*
  * EP93xx Physical Memory Map:
  *