app-containers/incus: fix cross-compilation issue

While building on `amd64`:
```bash
dosbin: _dist/bin/linux_amd64/incusd does not exist
```

Signed-off-by: Mathieu Tortuyaux <[email protected]>

Author: tormath1

sdk_container/src/third_party/portage-stable/app-containers/incus/incus-6.0.3-r1.ebuild renamed to sdk_container/src/third_party/portage-stable/app-containers/incus/incus-6.0.3-r2.ebuild

@@ -158,7 +158,8 @@ src_test() {
 src_install() {
 	export GOPATH="${S}/_dist"
 
-	if tc-is-cross-compiler ; then
+	export GOHOSTARCH=$(go-env_goarch "${CBUILD}")
+	if [ "${GOARCH}" != "${GOHOSTARCH}" ]; then
 		local bindir="_dist/bin/linux_${GOARCH}"
 	else
 		local bindir="_dist/bin"