u-boot-tools: remove stddef hack for musl

Fixed in 849570a814

srcpkgs/u-boot-tools/template

@@ -20,7 +20,6 @@ if [ "$CROSS_BUILD" ]; then
 fi
 
 post_extract() {
-	touch include/stddef.h  # musl hack
 	vsed '1itypedef unsigned long ulong;' \
 		-i include/image.h \
 		-i include/env.h \
@@ -32,6 +31,12 @@ do_configure() {
 	make ${makejobs} ${make_build_args} tools-only_defconfig
 }
 
+do_check() {
+	# skip tests for now. requires some gymnastics to make the python scripts
+	# find libfdt. the most useful target appears to be "make tcheck"
+	: ;
+}
+
 do_install() {
 	ln -sf fw_printenv tools/env/fw_setenv
 	for x in dumpimage fdtgrep fit_check_sign fit_info gen_eth_addr \