superio/fintek/f81866d: Add support for UART 3/4

Pins for UART 3/4 are by default GPIO pins.
This patch sets the pins in UART mode.
Since UART 1/3 and 2/4 share the same interrupt line,
the patch needs to enable also shared interrupts.
Datasheet: Name: F81866D/A-I, Release Date: Jan 2012, Version: V0.12P

Change-Id: Ief5d70c8b25a2fb6cd787c45a52410e20b0eaf2e
Signed-off-by: Fabian Kunkel <>
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <>
4 files changed