package/wilc_firmware: adapt to 2021.02 requirements

According to buildroot upstream 2021.02 specs:

Download: Rework the tarball creation logic (E.G. when a
        package is fetched from a git/svn repo) to no longer require a
        host-tar <= 1.29. To differ between the old and the new
        format, the new tarballs have gained a -br1 suffix
        (<pkg>-<version>-br1.tar.gz).

The old style of getting a package was adding a '-br1' suffix to the
tarball, which would make the hash check fail for this package.
Update to a simpler github get method, and the checksum works fine,
buildroot does not add -br1 to the tarball.

Signed-off-by: Eugen Hristev <[email protected]>

Author: ehristev

package/wilc_firmware/wilc_firmware.hash

@@ -5,7 +5,7 @@ sha256 c42f7d3c08d2c55b025e732d0e276dfd4331c1a6f8c00d3a56d144e945a873fb wilc_fir
 sha256 940820d48c853101de1d3c9b283c95f353d6f2d6f2df17e9b1fd9216dd143ade wilc_firmware-wilc_linux_15_4.tar.gz
 sha256 21ac6ab27cdebc53a0d874228be92d9a429643fce433f4a20452ebe053249a10 wilc_firmware-wilc_linux_15_4_1rc1.tar.gz
 sha256 44d4c933e35d471fd6571143e5283d3663b12eaa0713d31066a88c9a7ae76893 wilc_firmware-wilc_linux_15_4_1rc2.tar.gz
-sha256 5af63574020c16059d34d36c8d564a5f7b06bcb3d8e6dba231079e0ba64415ba wilc_firmware-wilc_linux_15_4_1.tar.gz
+sha256 6cf15ab21aa693a7c12f851dd4812cd900298297659b33ba478c176cbc7c0df3 wilc_firmware-wilc_linux_15_4_1.tar.gz
 
 # Hash for licence files
 sha256 71355eee947a312594dbdaac039827544f93d23949b65c356b7b0ce09e2600fb LICENCE.wilc_fw

package/wilc_firmware/wilc_firmware.mk

@@ -5,8 +5,7 @@
 ################################################################################
 
 WILC_FIRMWARE_VERSION = wilc_linux_15_4_1
-WILC_FIRMWARE_SITE = https://github.com/linux4wilc/firmware.git
-WILC_FIRMWARE_SITE_METHOD = git
+WILC_FIRMWARE_SITE = $(call github,linux4wilc,firmware,$(WILC_FIRMWARE_VERSION))
 WILC_FIRMWARE_LICENSE = Microchip firmware
 WILC_FIRMWARE_LICENSE_FILES = LICENCE.wilc_fw