tstools: perform shared library linking step using gcc rather than ld

Fixes http://autobuild.buildroot.net/results/c45/c45bbdaff6cff56b5646add38032f29bb5520f16

Using ld directly breaks with certain toolchain configurations.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tstools/tstools.mk

@@ -10,7 +10,8 @@ TSTOOLS_SOURCE  = tstools-$(TSTOOLS_VERSION).tgz
 TSTOOLS_LICENSE = MPL v1.1
 
 define TSTOOLS_BUILD_CMDS
-	$(TARGET_CONFIGURE_OPTS) $(TARGET_MAKE_ENV) $(MAKE) -C $(@D)
+	$(TARGET_CONFIGURE_OPTS) LD="$(TARGET_CC)" $(TARGET_MAKE_ENV) \
+		$(MAKE) -C $(@D)
 endef
 
 define TSTOOLS_INSTALL_TARGET_CMDS