Update makefiles after merge of Chromium at fb34b348eead

This commit was generated by merge_from_chromium.py.

Change-Id: Ib0295c91c15e61f31e7e34f8fbc97b1cbdf0c441
diff --git a/ft2.target.linux-mips.mk b/ft2.target.linux-mips.mk
index 3a72276..d2cfefc 100644
--- a/ft2.target.linux-mips.mk
+++ b/ft2.target.linux-mips.mk
@@ -75,6 +75,7 @@
 	-Wno-sequence-point \
 	-Os \
 	-g \
+	-gdwarf-4 \
 	-fdata-sections \
 	-ffunction-sections \
 	-fomit-frame-pointer \