i.MX2 family: Add basic mach support (headers)

This patch adds basic mach support for the mx2 processor family, based
on the original freescale code and adapted to mainline kernel coding
style.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>

diff --git a/include/asm-arm/arch-mxc/hardware.h b/include/asm-arm/arch-mxc/hardware.h
index 4ed2d80..f841127 100644
--- a/include/asm-arm/arch-mxc/hardware.h
+++ b/include/asm-arm/arch-mxc/hardware.h
@@ -26,6 +26,9 @@
 # include <asm/arch/mx31.h>
 #endif
 
+#ifdef CONFIG_ARCH_MX2
+#endif
+
 #include <asm/arch/mxc.h>
 
 #endif /* __ASM_ARCH_MXC_HARDWARE_H__ */