src/Makefile.am: fix type GK_FLAGS -> GKM_FLAGS
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -10,7 +10,7 @@ gkleds_la_CFLAGS = -Wall -O2 -I../pixmaps @X_CFLAGS@ @GTK_CFLAGS@ @GKM_CFLAGS@
 gkleds_la_LIBADD = @X_PRE_LIBS@ @X_LIBS@ @X_EXTRA_LIBS@ @GTK_LIBS@ @GKM_EXTRA_SRCS@
 
 ## linker flags, we are building a plugin so skip lib prefix and lib versions
-gkleds_la_LDFLAGS = -module -avoid-version @GK_LDFLAGS@
+gkleds_la_LDFLAGS = -module -avoid-version @GKM_LDFLAGS@
 
 ## gkleds.la sources
 gkleds_la_SOURCES = gkleds.c gkleds.h
