Explicitly tell gcc what assembler/linker to use

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>

pkg/tc-gcc1/build

@@ -53,6 +53,8 @@ build() {
 		     --disable-libatomic \
 		     --disable-libquadmath --disable-threads \
 		     --enable-languages=c --with-newlib \
+		     --with-as="$TCDIR/bin/$TARGET-as" \
+		     --with-ld="$TCDIR/bin/$TARGET-ld" \
 		     --with-arch="$GCC_CPU" $extra $GCC_EXTRACFG
 
 	make -j $NUMJOBS all-gcc all-target-libgcc

pkg/tc-gcc2/build

@@ -18,6 +18,8 @@ build() {
 		     --enable-c99 --enable-long-long \
 		     --enable-libmudflap --disable-multilib \
 		     --disable-libsanitizer --disable-libquadmath \
+		     --with-as="$TCDIR/bin/$TARGET-as" \
+		     --with-ld="$TCDIR/bin/$TARGET-ld" \
 		     --with-arch="$GCC_CPU" $extra $GCC_EXTRACFG \
 		     --with-native-system-header-dir="/include"