The patch fixes the following compiler's warning:

In file included from include/common.h:33:0,
                 from arch/arm/mach-zynq/zynq.c:18:
arch/arm/include/asm/io.h:4:0: warning: "IO_SPACE_LIMIT" redefined
 #define IO_SPACE_LIMIT 0

In file included from
arch/arm/mach-zynq/zynq.c:17:0:
include/asm-generic/io.h:92:0: note: this is the location of the previous definition
 #define IO_SPACE_LIMIT 0xffff

Cc: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>