serial: sh: Convert to Kconfig

Convert the SH Serial to Kconfig using tools/moveconfig.py tool
and a bit of manual adjustment to cater for failed conversions.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/configs/r8a7796_salvator-x_defconfig b/configs/r8a7796_salvator-x_defconfig
index b408cb0..1fd4505 100644
--- a/configs/r8a7796_salvator-x_defconfig
+++ b/configs/r8a7796_salvator-x_defconfig
@@ -21,6 +21,7 @@
 CONFIG_SH_SDHI=y
 CONFIG_DM_ETH=y
 CONFIG_RENESAS_RAVB=y
+CONFIG_SCIF_CONSOLE=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y