misc: fix typo on Kconfig

When panel driver was moved from staging to misc a new line was missing
to be added on Kconfig file.

Fixes: 305b37bd ("misc: Move panel driver out of staging")

Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>