blkspace: fix ldflags for iowatcher

This quiets a GNU_HASH warning.

(From OE-Core rev: ad8a2ca46075a7ea236d6db9da963dc0040d2206)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/blktrace/blktrace/ldflags.patch

@@ -9,11 +9,6 @@ http://git.yoctoproject.org/cgit/cgit.cgi/meta-mentor as of commit id
 aed463414e2e2bf8ca44ba54ee5973e7ed599e57
 
 Signed-off-by: Fahad Usman <fahad_usman@mentor.com>
----
- Makefile          |   11 ++++++-----
- btreplay/Makefile |    3 ++-
- btt/Makefile      |    3 ++-
- 3 files changed, 10 insertions(+), 7 deletions(-)
 
 --- git.orig/Makefile
 +++ git/Makefile
@@ -91,3 +86,21 @@ Signed-off-by: Fahad Usman <fahad_usman@mentor.com>
  
  ifneq ($(wildcard .depend),)
  include .depend
+--- git.orig/iowatcher/Makefile
++++ git/iowatcher/Makefile
+@@ -1,5 +1,6 @@
+ C      = gcc
+ CFLAGS  = -Wall -O0 -g -W
++LDFLAGS =
+ ALL_CFLAGS = $(CFLAGS) -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
+ 
+ PROGS = iowatcher
+@@ -19,7 +20,7 @@ all: $(ALL)
+ 	$(CC) -o $*.o -c $(ALL_CFLAGS) $<
+ 
+ iowatcher: blkparse.o plot.o main.o tracers.o mpstat.o fio.o
+-	$(CC) $(ALL_CFLAGS) -o $@ $(filter %.o,$^) -lm
++	$(CC) $(ALL_CFLAGS) -o $@ $(filter %.o,$^) -lm $(LDFLAGS)
+ 
+ depend:
+ 	@$(CC) -MM $(ALL_CFLAGS) *.c 1> .depend