kconfig: Use 'CONFIG_FOO_*' in #endif comments to avoid CI failures

https://github.com/zephyrproject-rtos/ci-tools/pull/65

 tweaks the check
for references to undefined Kconfig symbol to whitelist anything on the
form 'CONFIG_FOO_*' (or 'CONFIG_FOO_*_...'). This is meant for #endif
comments that talk about many related symbols.

Fix two existing #endif comments to use that format, so that some
entries can be removed from the whitelist in the CI check.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>