mainboard/intel/dg41wv: Fix lint check error

Fix lint error due to non-ASCII characters

BUG=none
BRANCH=none
TEST=check if no error in checkpatch.pl script.

Change-Id: Iec7682e460c8e0d467a70349a23390554cc1de92
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/26562
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/intel/dg41wv/devicetree.cb b/src/mainboard/intel/dg41wv/devicetree.cb
index 315cc06..214c49b 100644
--- a/src/mainboard/intel/dg41wv/devicetree.cb
+++ b/src/mainboard/intel/dg41wv/devicetree.cb
@@ -95,8 +95,8 @@
 				subsystemid 0x8086 0x5756
 			end
 			device pci 1e.0 on end		# PCI bridge
-			device pci 1e.2 off end		# AC ’97 Audio Controller
-			device pci 1e.3 off end		# AC ’97 Modem Controller
+			device pci 1e.2 off end		# AC'97 Audio Controller
+			device pci 1e.3 off end		# AC'97 Modem Controller
 			device pci 1f.0 on		# ISA bridge
 				subsystemid 0x8086 0x5756
 				chip superio/winbond/w83627dhg