Specify correct licence for dragonboard boot firmware (#1247)

Stop specifying `LICENSE = "proprietary"` for boot firmware for
Dragonboard 410c and 820c. We now have a proper one.

Author: ricardosalveti

recipes-bsp/firmware-boot/firmware-qcom-boot-dragonboard410c-sdcard_17.09.bb

@@ -1,6 +1,6 @@
 SUMMARY = "Prebuilt bootlader images for Dragonboard 410c"
 
-LICENSE = "Proprietary"
+LICENSE = "LICENSE.qcom"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=4d087ee0965cb059f1b2f9429e166f64"
 
 SRC_URI = "https://releases.linaro.org/96boards/dragonboard410c/linaro/rescue/17.09/dragonboard410c_bootloader_sd_linux-88.zip"

recipes-bsp/firmware-boot/firmware-qcom-boot-dragonboard410c_1036.1.bb

@@ -1,6 +1,6 @@
 SUMMARY = "Prebuilt bootlader images for Dragonboard 410c"
 
-LICENSE = "Proprietary"
+LICENSE = "LICENSE.qcom"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=4d087ee0965cb059f1b2f9429e166f64"
 
 SRC_URI = "https://releases.linaro.org/96boards/dragonboard410c/qualcomm/firmware/linux-board-support-package-r${PV}.zip"

recipes-bsp/firmware-boot/firmware-qcom-boot-dragonboard820c_01700.1.bb

@@ -1,6 +1,6 @@
 SUMMARY = "Prebuilt bootlader images for Dragonboard 820c"
 
-LICENSE = "Proprietary"
+LICENSE = "LICENSE.qcom"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=4d087ee0965cb059f1b2f9429e166f64"
 
 SRC_URI = "https://releases.linaro.org/96boards/dragonboard820c/qualcomm/firmware/linux-board-support-package-r${PV}.zip"