libpayload: Initial ARMv7 port

This compiles, but it's not tested yet.

Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2035
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

payloads/libpayload/bin/lpgcc

@@ -107,16 +107,21 @@ while [ $# -gt 0 ]; do
 	shift
 done
 
+if [ "$CONFIG_ARCH_ARMV7" = "y" ]; then
+  _ARCHINCDIR=$_INCDIR/armv7
+  _ARCHLIBDIR=$_LIBDIR/armv7
+fi
+
+if [ "$CONFIG_ARCH_POWERPC" = "y" ]; then
+  _ARCHINCDIR=$_INCDIR/powerpc
+  _ARCHLIBDIR=$_LIBDIR/powerpc
+fi
+
 if [ "$CONFIG_ARCH_X86" = "y" ]; then
   _ARCHINCDIR=$_INCDIR/x86
   _ARCHLIBDIR=$_LIBDIR/x86
 fi
 
-if [ "$CONFIG_TARGET_POWERPC" = "y" ]; then
-  _ARCHINCDIR=$_INCDIR/powerpc
-  _ARCHLIBDIR=$_LIBDIR/powerpc
-fi
-
 _CFLAGS="-m32 -nostdinc -nostdlib -I$_INCDIR -I$_ARCHINCDIR -D__LIBPAYLOAD__=1"
 
 # Check for the -fno-stack-protector silliness