[XS] Change in coreboot[main]: mb/asus/p8z77-m: Properly configure early serial

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/79222?usp=email )

Change subject: mb/asus/p8z77-m: Properly configure early serial
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mb/asus/p8z77-m: Properly configure early serial

Board was not producing serial output until well into ramstage.

To fix, select SUPERIO_NUVOTON_COMMON_COM_A Kconfig to tell
nuvoton_enable_serial() to route serial port A signals to the outside,
not GPIO8x.

TEST=Full native raminit debug log received over serial by minicom.

Change-Id: I376a79dd76ffa5f4d47e7c0cb53680e173e1ad78
Signed-off-by: Keith Hui 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79222
Reviewed-by: Nico Huber 
Tested-by: build bot (Jenkins) 
Reviewed-by: Angel Pons 
---
M src/mainboard/asus/p8x7x-series/Kconfig
1 file changed, 1 insertion(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, but someone else must approve
  Angel Pons: Looks good to me, approved

diff --git a/src/mainboard/asus/p8x7x-series/Kconfig b/src/mainboard/asus/p8x7x-series/Kconfig
index 277fe40..e278b56 100644
--- a/src/mainboard/asus/p8x7x-series/Kconfig
+++ b/src/mainboard/asus/p8x7x-series/Kconfig
@@ -54,6 +54,7 @@
    select BOARD_ROMSIZE_KB_8192
    select MEMORY_MAPPED_TPM
    select SUPERIO_NUVOTON_NCT6779D
+	select SUPERIO_NUVOTON_COMMON_COM_A

if BOARD_ASUS_P8X7X_SERIES