linux-firmware: Add missing ralink-firmware License

(From OE-Core rev: 57c025ac2328482097bce6913edcd89d0d740a7c)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/linux-firmware/linux-firmware_git.bb

@@ -589,6 +589,7 @@ LICENSE_${PN} = "\
     & Firmware-r8a779x_usb3 \
     & Firmware-radeon \
     & Firmware-ralink_a_mediatek_company_firmware \
+    & Firmware-ralink-firmware \
     & Firmware-siano \
     & Firmware-tda7706-firmware \
     & Firmware-ti-connectivity \