Due to buildsystem limitations, we have previously disabled
CONFIG_DEBUG_INFO. This however, causes CONFIG_DEBUG_INFO_BTF to be
disabled, which in turn causes some warnings at boot when built with
CONFIG_BPF_PRELOAD. So let's also disable CONFIG_BPF_PRELOAD.
We need to disable CONFIG_DEBUG_INFO for build with GitHub's Actions
because of memory requirements.
Signed-off-by: Tsuchiya Yuto (kitakar5525) <kitakar@gmail.com>