toolchain/helpers: only check for an EABI toolchain

... since we only support EABI now.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

toolchain/helpers.mk

@@ -280,13 +280,8 @@ check_uclibc = \
 check_arm_abi = \
 	__CROSS_CC=$(strip $1) ; \
 	EXT_TOOLCHAIN_TARGET=`LANG=C $${__CROSS_CC} -v 2>&1 | grep ^Target | cut -f2 -d ' '` ; \
-	if echo $${EXT_TOOLCHAIN_TARGET} | grep -qE 'eabi(hf)?$$' ; then \
-		EXT_TOOLCHAIN_ABI="eabi" ; \
-	else \
-		EXT_TOOLCHAIN_ABI="oabi" ; \
-	fi ; \
-	if [ x$(BR2_ARM_EABI) = x"y" -a $${EXT_TOOLCHAIN_ABI} = "oabi" ] ; then \
-		echo "Incorrect ABI setting" ; \
+	if ! echo $${EXT_TOOLCHAIN_TARGET} | grep -qE 'eabi(hf)?$$' ; then \
+		echo "External toolchain uses the unsuported OABI" ; \
 		exit 1 ; \
 	fi