[S] Change in coreboot[master]: mb/asrock/b75m-itx: Remove cpu_fan_tach_src from CMOS layout

[Kevin Keijzer (Code Review)]

Kevin Keijzer has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/73931 )

Change subject: mb/asrock/b75m-itx: Remove cpu_fan_tach_src from CMOS layout
......................................................................

mb/asrock/b75m-itx: Remove cpu_fan_tach_src from CMOS layout

This board inherited cmos.default and cmos.layout from asrock/h77pro4-m,
which has two CPU fan headers and a CMOS option to select which one will
provide the tachometer source.

However, the code for this was never implemented. Moreover, this board
only has one CPU fan header, rendering the option useless. This change
removes the option from cmos.layout and cmos.default.

Change-Id: Ib4580e243781e2340af2cefb825f26ee896c2bd3
Signed-off-by: Kevin Keijzer 
---
M src/mainboard/asrock/b75m-itx/cmos.default
M src/mainboard/asrock/b75m-itx/cmos.layout
2 files changed, 18 insertions(+), 11 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/31/73931/1

diff --git a/src/mainboard/asrock/b75m-itx/cmos.default b/src/mainboard/asrock/b75m-itx/cmos.default
index 23386fb..c7aa620 100644
--- a/src/mainboard/asrock/b75m-itx/cmos.default
+++ b/src/mainboard/asrock/b75m-itx/cmos.default
@@ -4,4 +4,3 @@
 power_on_after_fail=Disable
 sata_mode=AHCI
 gfx_uma_size=64M
-cpu_fan_tach_src=CPU_FAN1
diff --git a/src/mainboard/asrock/b75m-itx/cmos.layout b/src/mainboard/asrock/b75m-itx/cmos.layout
index 35b4d50..998806a 100644
--- a/src/mainboard/asrock/b75m-itx/cmos.layout
+++ b/src/mainboard/asrock/b75m-itx/cmos.layout
@@ -24,9 +24,6 @@
 # coreboot config options: northbridge
 416	5	e	6	gfx_uma_size

-# coreboot config options: mainboard-specific
-421	2	e	7	cpu_fan_tach_src
-
 # coreboot config options: check sums
 984	16	h	0	check_sum

@@ -83,13 +80,6 @@
 6	15	512M
 6	16	1024M

-# cpu_fan_tach_src (select which header provides the tachometer
-# signal to the Super I/O on its CPUFANIN input)
-7	0	None
-7	1	CPU_FAN1
-7	2	CPU_FAN2
-7	3	Both
-
 # -----------------------------------------------------------------
 checksums