ARM: fix ARCH_IXP4xx usage of ARCH_SUPPORTS_BIG_ENDIAN

The Kconfig for arch/arm/mach-ixp4xx has a local definition
of ARCH_SUPPORTS_BIG_ENDIAN which could be used elsewhere.
This means that if IXP4xx is selected and this symbol is
selected eleswhere then an warning is produced.

Clean the following error up by making the symbol be
selected by the main ARCH_IXP4XX definition and have a
common definition in arch/arm/mm/Kconfig

warning: (ARCH_xxx) selects ARCH_SUPPORTS_BIG_ENDIAN which has unmet direct dependencies (ARCH_IXP4XX)
warning: (ARCH_xxx) selects ARCH_SUPPORTS_BIG_ENDIAN which has unmet direct dependencies (ARCH_IXP4XX)

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>

3 files changed, 7 insertions, 4 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1ad6fb6c094d..f048e1453db3 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -481,6 +481,7 @@ config ARCH_IXP4XX
         bool "IXP4xx-based"
         depends on MMU
         select ARCH_HAS_DMA_SET_COHERENT_MASK
+        select ARCH_SUPPORTS_BIG_ENDIAN
         select ARCH_REQUIRE_GPIOLIB
         select CLKSRC_MMIO
         select CPU_XSCALE
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index 30e1ebe3a891..c342dc4e8a45 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -1,9 +1,5 @@
 if ARCH_IXP4XX
 
-config ARCH_SUPPORTS_BIG_ENDIAN
-        bool
-        default y
-
 menu "Intel IXP4xx Implementation Options"
 
 comment "IXP4xx Platforms"
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index cd2c88e7a8f7..1f8fed94c2a4 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -952,3 +952,9 @@ config ARCH_HAS_BARRIERS
         help
           This option allows the use of custom mandatory barriers
           included via the mach/barriers.h file.
+
+config ARCH_SUPPORTS_BIG_ENDIAN
+        bool
+        help
+          This option specifies the architecture can support big endian
+          operation.