linux-firmware: update to the commit from 2016-09-15

This adds e.g. BCM43430 firmware (not packaged yet).

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

package/firmware/linux-firmware/Makefile

@@ -8,8 +8,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=linux-firmware
-PKG_SOURCE_VERSION:=52442afee9907bc32a058f22bb3295d040677c26
-PKG_VERSION:=2016-01-25-$(PKG_SOURCE_VERSION)
+PKG_SOURCE_VERSION:=c4c07a8d1128d50a5c2885ceea1abbebaa82f820
+PKG_VERSION:=2016-09-15-$(PKG_SOURCE_VERSION)
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
@@ -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:=8d44332359de89b1936b4ff608a72614
+PKG_MIRROR_MD5SUM:=816697c8f6a5e9a3d478da2d8ff4c721
 
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>