fix(toolchain_util.sh): Move native->cross pkg translation to function

Will be useful in other places and seems better to hide the bash magic.

build_library/catalyst_toolchains.sh

@@ -47,7 +47,7 @@ EOF
 
 build_cross_toolchain() {
     local cross_chost="$1"
-    local cross_pkgs=( "${TOOLCHAIN_PKGS[@]/*\//cross-${cross_chost}/}" )
+    local cross_pkgs=( $(get_cross_pkgs $cross_chost) )
     local PORTDIR="$(portageq envvar PORTDIR)"
     local PKGDIR="${PORTDIR}/packages/crossdev"
 

build_library/toolchain_util.sh

@@ -62,3 +62,12 @@ get_board_profile() {
         fi
     done
 }
+
+get_cross_pkgs() {
+    local cross_chost native_pkg
+    for cross_chost in "$@"; do
+        for native_pkg in "${TOOLCHAIN_PKGS[@]}"; do
+            echo "${native_pkg/*\//cross-${cross_chost}/}"
+        done
+    done
+}