mb/google/octopus: Set ModPhyIfValue to default value 0x12

0x12 will be more stable according to validation result on SD card and
USB devices.

BUG=b:163382089
BRANCH=none
TEST=check if SD cards and USB devices work properly

Signed-off-by: Marx Wang <marx.wang@intel.com>
Change-Id: Ic98f27b6164daa3667009300439c61fed43a4a0b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45573
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Henry Sun <henrysun@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/octopus/variants/baseboard/devicetree.cb

@@ -287,6 +287,6 @@ chip soc/intel/apollolake
 	register "PmicPmcIpcCtrl" = "0x5e4302f8"
 
 	# FSP UPD to modify the Integrated Filter (IF) value
-	# 0x12(Default) for Windows, 0x16 for Chrome
-	register "ModPhyIfValue" = "0x16"
+	# Set it to default value: 0x12
+	register "ModPhyIfValue" = "0x12"
 end