build-style/go: restrict archs for gccgo env too

this is because some archs lack support in gccgo, and some are
not integrated yet in our toolchains

common/environment/build-style/go.sh

@@ -7,6 +7,11 @@ if [ -z "$hostmakedepends" -o "${hostmakedepends##*gcc-go-tools*}" ]; then
 	nopie=yes
 else
 	# gccgo compiler
+	if [ -z "$archs" ]; then
+		# we have support for these in our gcc
+		# ppcle is missing, and mips doesn't have go in cross yet
+		archs="aarch64* armv[567]* i686* x86_64* ppc64* ppc ppc-musl"
+	fi
 	if [ "$CROSS_BUILD" ]; then
 		# target compiler to use; otherwise it'll just call gccgo
 		export GCCGO="${XBPS_CROSS_TRIPLET}-gccgo"