[media] mmc/Kconfig: Improve driver name for siano mmc/sdio driver

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/mmc/Kconfig b/drivers/media/mmc/Kconfig
index 0f2a957..8c30ada 100644
--- a/drivers/media/mmc/Kconfig
+++ b/drivers/media/mmc/Kconfig
@@ -1 +1,2 @@
+comment "Supported MMC/SDIO adapters"
 source "drivers/media/mmc/siano/Kconfig"