linux-firmware: update md5sum

Since the md5sum of the mirrored Git clone archive has been set in the Makefile
before that particular archive was uploaded to the source mirror, the buildbots
uploaded their own, different copy instead invalidating the mirror md5sum for
anyone else.

In order to fix the mismatch, update the md5sum to reflect the archive being
present on the download server.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

package/firmware/linux-firmware/Makefile

@@ -17,7 +17,7 @@ PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_SOURCE_VERSION)
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_SOURCE_SUBDIR)
 PKG_SOURCE_URL:=https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
-PKG_MIRROR_MD5SUM:=816697c8f6a5e9a3d478da2d8ff4c721
+PKG_MIRROR_MD5SUM:=030c69a540784e451293e327539ccc1c
 
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>