added gzip linux kernel modules

scripts/8821au_ko.sh

@@ -19,6 +19,7 @@ ko8821au() {
     mkdir -pv $rootfspath/lib/modules/${kernel_version}/kernel/drivers/net/wireless
     cp -v 8821au.ko $rootfspath/lib/modules/${kernel_version}/kernel/drivers/net/wireless/
     /sbin/depmod -a ${kernel_version} -b $rootfspath
+    gzip -9 $rootfspath/lib/modules/${kernel_version}/kernel/drivers/net/wireless/8821au.ko
     check $? "Install Linux Kernel module ${pkgname}"
     [ -d $rootfspath/usr/lib/modules/$kernel_version/source ] && rm -rv $rootfspath/usr/lib/modules/$kernel_version/source
     [ -d $rootfspath/usr/lib/modules/$kernel_version/build ] && rm -rv $rootfspath/usr/lib/modules/$kernel_version/build

scripts/kernel.sh

@@ -36,6 +36,9 @@ kernel_modules() {
     check $? "Build Linux Kernel modules"
     printf "$UGREEN** Installing Linux Kernel modules into rootfs path\n$RESET"
     make ARCH=$ARCH CROSS_COMPILE=$CROSS_COMPILE- INSTALL_MOD_PATH=$rootfspath modules_install # &>> $fulllogfile
+    for i in $(find $rootfspath | grep .ko); do
+        gzip -9 $i;
+    done
     check $? "Install Linux Kernel modules"
     rm -v $rootfspath/usr/lib/modules/$kernel_version/{source,build}
 } # kernel_modules