Commit 
52939c03 (ARM: MX3: fix CPU revision number detection) started
using the CPU's SREV register for revision number detection. This
makes it mandatory to have a valid SPBA0 mapping. Add this to the
global map_io code instead of adding multiple copies for each board.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Tested on Qong (EVB-Lite)
Tested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
                .pfn            = __phys_to_pfn(AIPS2_BASE_ADDR),
                .length         = AIPS2_SIZE,
                .type           = MT_DEVICE_NONSHARED
+       }, {
+               .virtual = SPBA0_BASE_ADDR_VIRT,
+               .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
+               .length = SPBA0_SIZE,
+               .type = MT_DEVICE_NONSHARED
        },
 };
 
 
  */
 static struct map_desc mx31ads_io_desc[] __initdata = {
        {
-               .virtual        = SPBA0_BASE_ADDR_VIRT,
-               .pfn            = __phys_to_pfn(SPBA0_BASE_ADDR),
-               .length         = SPBA0_SIZE,
-               .type           = MT_DEVICE_NONSHARED
-       }, {
                .virtual        = CS4_BASE_ADDR_VIRT,
                .pfn            = __phys_to_pfn(CS4_BASE_ADDR),
                .length         = CS4_SIZE / 2,
 
  */
 static struct map_desc mx31lite_io_desc[] __initdata = {
        {
-               .virtual = SPBA0_BASE_ADDR_VIRT,
-               .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
-               .length = SPBA0_SIZE,
-               .type = MT_DEVICE_NONSHARED
-       }, {
                .virtual = CS4_BASE_ADDR_VIRT,
                .pfn = __phys_to_pfn(CS4_BASE_ADDR),
                .length = CS4_SIZE,
 
  */
 static struct map_desc mx31pdk_io_desc[] __initdata = {
        {
-               .virtual = SPBA0_BASE_ADDR_VIRT,
-               .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
-               .length = SPBA0_SIZE,
-               .type = MT_DEVICE_NONSHARED,
-       }, {
                .virtual = CS5_BASE_ADDR_VIRT,
                .pfn = __phys_to_pfn(CS5_BASE_ADDR),
                .length = CS5_SIZE,