soc/intel/cannonlake: Fix Build break

1.Replace outdated defination of TCO_EN to TCO_BASE_EN
2.Remove setmaxfreq() as not needed any more.

Change-Id: Id54fdfd14f1abaa592132195e6f9acfa5807626e
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/20568
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/cannonlake/bootblock/pch.c b/src/soc/intel/cannonlake/bootblock/pch.c
index 9d326bb..d294cea 100644
--- a/src/soc/intel/cannonlake/bootblock/pch.c
+++ b/src/soc/intel/cannonlake/bootblock/pch.c
@@ -139,7 +139,7 @@
 
 	/* Disable TCO in SMBUS Device first before changing Base Address */
 	reg32 = pci_read_config32(PCH_DEV_SMBUS, TCOCTL);
-	reg32 &= ~TCO_EN;
+	reg32 &= ~TCO_BASE_EN;
 	pci_write_config32(PCH_DEV_SMBUS, TCOCTL, reg32);
 
 	/* Program TCO Base */