[XS] Change in coreboot[main]: ec/system76/ec: Remove RPM calculation

[Tim Crawford (Code Review)]

Tim Crawford has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/83308?usp=email )

Change subject: ec/system76/ec: Remove RPM calculation
......................................................................

ec/system76/ec: Remove RPM calculation

System76 EC since system76/ec#456 performs the RPM calculation itself
and stores it in EC RAM where previously the raw tachometer values were
saved. The SBIOS is no longer required to make the conversion.

Ref: https://github.com/system76/ec/pull/456
Change-Id: I82a4e25a8ce0f274b2d98e7ff2b12595acf6c3c5
Signed-off-by: Tim Crawford 
---
M src/ec/system76/ec/acpi/s76.asl
1 file changed, 0 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/08/83308/1

diff --git a/src/ec/system76/ec/acpi/s76.asl b/src/ec/system76/ec/acpi/s76.asl
index 329c5d3..06000a4 100644
--- a/src/ec/system76/ec/acpi/s76.asl
+++ b/src/ec/system76/ec/acpi/s76.asl
@@ -146,10 +146,6 @@
    			Local1 = ^^PCI0.LPCB.EC0.RPM2
    		}
    	}
-		If (Local1 != 0) {
-			// 60 * (EC frequency / 120) / 2
-			Local1 = 2156250 / Local1
-		}
    	Return ((Local1 << 8) | Local0)
    }