resources: fix typo in Pannotia Color MaxMin

Color's MaxMin variant incorrectly included the CUDA file for the kernel
instead of the HIP kernel file.  This commit fixes that problem.

Change-Id: I8b0855e25b015720384181c53c7435930c16b6d4
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-resources/+/51908
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
diff --git a/src/gpu/pannotia/color/coloring_maxmin.cpp b/src/gpu/pannotia/color/coloring_maxmin.cpp
index 01e173d..7e7cd51 100644
--- a/src/gpu/pannotia/color/coloring_maxmin.cpp
+++ b/src/gpu/pannotia/color/coloring_maxmin.cpp
@@ -63,7 +63,7 @@
 #include <sys/time.h>
 #include "../graph_parser/parse.h"
 #include "../graph_parser/util.h"
-#include "kernel_maxmin.cu"
+#include "kernel_maxmin.h"
 
 #ifdef GEM5_FUSION
 #include <stdint.h>