ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD

ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD

LLD does not yet support any big endian architectures. Make this config
non-selectable when using LLD until LLD is fixed.

Link: https://github.com/ClangBuiltLinux/linux/issues/965
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>