WIP: Use config fragments for kernel configuration
Adds support for config fragments - small diffs which define what kernel config options must be disabled/enabled.
Use _kconfig_name to define the base defconfig. Note: "_config" must be removed from APKBUILD.
Diff must be named "_kconfig_name.arch"
Example: for base defconfig sprd_sharkl3_defconfig
and arch aarch64
the file name will be sprd_sharkl3_defconfig.aarch64
The file needs to be created manually (e.g. with touch), it can be empty.
Related: #1824 , pmaports!1812
Edited by Administrator