Fix typo in JDK-8150201

In JDK-8150201, some debug flags were corrected. In one of the overrides, the file name was misspelled so the debug flag correction is not in effect:

diff -r 63a9e10565c4 make/solaris/makefiles/amd64.make
--- a/make/solaris/makefiles/amd64.make
+++ b/make/solaris/makefiles/amd64.make
@@ -39,7 +39,7 @@
 # of OPT_CFLAGS. Restore it here.
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   OPT_CFLAGS/generateOptoStub.o += -g0 -xs
- OPT_CFLAGS/LinearScan.o += -g0 -xs
+ OPT_CFLAGS/c1_LinearScan.o += -g0 -xs
 endif
 
 else