QA Issue: No GNU_HASH in the elf binary in SWUpdate

Detected building with -morty.

Signed-off-by: Stefano Babic <sbabic@denx.de>

recipes-support/swupdate/swupdate.inc

@@ -15,6 +15,7 @@ SRC_URI = "git://github.com/sbabic/swupdate.git;protocol=git \
 
 SRCREV = "${AUTOREV}"
 
+INSANE_SKIP_${PN} = "ldflags"
 PACKAGES =+ "${PN}-www"
 
 FILES_${PN}-www = "/www/*"