package/b43-firmware: fix upstream URL

Unfortunately Larry Finger passed away in June 2024 [1], and
lwfinger.com is now squatted, and no longer has the same content as
before, causing a breakage when trying to download the 5.100.138
version of b43-firmware.

Since the exact same file is available from the OpenWrt mirror, and we
already use this mirror for the other b43-firmware version, let's use
the OpenWrt mirror for both.

Fixes:

  https://autobuild.buildroot.org/results/daf0aefbb10299f150c2c6a93df759ad07974752/

[1] https://lore.kernel.org/linux-wireless/77997185-86a6-41c5-af7a-74e4e9064437@lwfinger.net/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/b43-firmware/b43-firmware.mk

@@ -4,14 +4,14 @@
 #
 ################################################################################
 
+B43_FIRMWARE_SITE = http://mirror2.openwrt.org/sources
+
 ifeq ($(BR2_PACKAGE_B43_FIRMWARE_KERNEL_AFTER_3_2),y)
 B43_FIRMWARE_VERSION = 5.100.138
-B43_FIRMWARE_SITE = http://www.lwfinger.com/b43-firmware
 B43_FIRMWARE_SOURCE = broadcom-wl-$(B43_FIRMWARE_VERSION).tar.bz2
 B43_FIRMWARE_DRIVER_FILE = linux/wl_apsta.o
 else ifeq ($(BR2_PACKAGE_B43_FIRMWARE_KERNEL_BEFORE_3_2),y)
 B43_FIRMWARE_VERSION = 5.10.56.27.3
-B43_FIRMWARE_SITE = http://mirror2.openwrt.org/sources
 B43_FIRMWARE_SOURCE = broadcom-wl-$(B43_FIRMWARE_VERSION)_mipsel.tar.bz2
 B43_FIRMWARE_DRIVER_FILE = driver/wl_apsta/wl_prebuilt.o
 endif