package/sunxi-mali-utgard: properly handle legacy for renamed options

Commit "6a7a652b14 package/sunxi-mali-utgard: rename from
sunxi-mali-mainline" tried to add legacy handling but the new symbols
are part of a choice, and Kconfig does not enforce the select of a
option from a choice.

Update the legacy entry for 2022.02, following the example described in
the beginning of the file.

Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit efc223abd4fe764f8af8238aec67e8cb700db45e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Config.in.legacy

@@ -645,20 +645,22 @@ config BR2_PACKAGE_SUNXI_MALI_MAINLINE
 config BR2_PACKAGE_SUNXI_MALI_MAINLINE_R6P2
 	bool "sunxi-mali-mainline-r6p2 was renamed"
 	select BR2_LEGACY
-	select BR2_PACKAGE_SUNXI_MALI_UTGARD_R6P2
 	help
 	  The sunxi-mali-mainline package has been renamed
 	  sunxi-mali-utgard, the suboptions of this package have also
 	  been renamed accordingly.
+# Note: BR2_PACKAGE_SUNXI_MALI_MAINLINE_R6P2 is still referenced from
+# package/sunxi-mali-utgard/Config.in
 
 config BR2_PACKAGE_SUNXI_MALI_MAINLINE_R8P1
 	bool "sunxi-mali-mainline-r8p1 was renamed"
 	select BR2_LEGACY
-	select BR2_PACKAGE_SUNXI_MALI_UTGARD_R8P1
 	help
 	  The sunxi-mali-mainline package has been renamed
 	  sunxi-mali-utgard, the suboptions of this package have also
 	  been renamed accordingly.
+# Note: BR2_PACKAGE_SUNXI_MALI_MAINLINE_R8P1 is still referenced from
+# package/sunxi-mali-utgard/Config.in
 
 config BR2_PACKAGE_QT5WEBKIT_EXAMPLES
 	bool "qt5webkit-examples removed"

package/sunxi-mali-utgard/Config.in

@@ -20,6 +20,8 @@ config BR2_PACKAGE_PROVIDES_LIBGLES
 
 choice
 	prompt "Version"
+	default BR2_PACKAGE_SUNXI_MALI_UTGARD_R6P2 if BR2_PACKAGE_SUNXI_MALI_MAINLINE_R6P2 # legacy
+	default BR2_PACKAGE_SUNXI_MALI_UTGARD_R8P1 if BR2_PACKAGE_SUNXI_MALI_MAINLINE_R8P1 # legacy
 	default BR2_PACKAGE_SUNXI_MALI_UTGARD_R6P2
 	help
 	  Select the version of the userspace module.