signgp: Point S to WORKDIR

This helps in bitbake finding the license files etc.
correctly

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

recipes-bsp/x-load/signgp.bb

@@ -13,6 +13,8 @@ do_install() {
 	install -m 0755 signGP ${D}${bindir}
 }
 
+S = "${WORKDIR}"
+
 NATIVE_INSTALL_WORKS = "1"
 
 BBCLASSEXTEND = "native nativesdk"