drivers/i2c/wacom: Make the driver more generic

Wacom I2C driver can be used by devices other than
touchscreen. e.g. digitizer. So there is no need to name the driver
with touchscreen specific attributes. Only a separate descriptor name
is required that needs to be set by mainboard correctly.

BUG=chrome-os-partner:56246
BRANCH=None
TEST=Compiles successfully.

Change-Id: I0d32a4adae477373b3f4c5f3abbe188860701194
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17341
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb
index da893b1..d5745b4 100644
--- a/src/mainboard/google/reef/variants/pyro/devicetree.cb
+++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb
@@ -180,7 +180,7 @@
 			end
 		end	# - I2C 2
 		device pci 16.3 on
-			chip drivers/i2c/wacom_ts
+			chip drivers/i2c/wacom
 				register "generic" = "{
 					 .hid = WCOMNTN2_HID,
 					 .cid = PNP0C50_CID,