linux-firmware: rtl81xx: also install rtl8188eufw firmware variant

As used by the rtl8188eu staging driver.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-firmware/linux-firmware.mk

@@ -45,7 +45,8 @@ LINUX_FIRMWARE_FILES += \
 	rtlwifi/rtl8192cfw.bin rtlwifi/rtl8192cfwU.bin 		\
 	rtlwifi/rtl8192cfwU_B.bin rtlwifi/rtl8192cufw.bin	\
 	rtlwifi/rtl8192defw.bin rtlwifi/rtl8192sefw.bin		\
-	rtlwifi/rtl8188efw.bin rtlwifi/rtl8192cufw_A.bin	\
+	rtlwifi/rtl8188efw.bin rtlwifi/rtl8188eufw.bin		\
+	rtlwifi/rtl8192cufw_A.bin				\
 	rtlwifi/rtl8192cufw_B.bin rtlwifi/rtl8192cufw_TMSC.bin
 LINUX_FIRMWARE_ALL_LICENSE_FILES += LICENCE.rtlwifi_firmware.txt
 endif