libhsakmt: Move global zfb_support to globals.c

zfb_support needs to accessed from multiple places, so move to globals.c
file

Change-Id: I40b487c26a13e7cc6fc01b671d6166e7114e02d2
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>

src/globals.c

@@ -37,3 +37,5 @@ int PAGE_SHIFT;
 
 /* whether to check all dGPUs in the topology support SVM API */
 bool is_svm_api_supported;
+/* zfb is mainly used during emulation */
+int zfb_support;

src/libhsakmt.h

@@ -38,6 +38,7 @@ extern bool hsakmt_forked;
 extern pthread_mutex_t hsakmt_mutex;
 extern bool is_dgpu;
 extern bool is_svm_api_supported;
+extern int zfb_support;
 
 extern HsaVersionInfo kfd_version_info;
 

src/memory.c

@@ -34,8 +34,6 @@
 #include <fcntl.h>
 #include "fmm.h"
 
-extern int zfb_support;
-
 HSAKMT_STATUS HSAKMTAPI hsaKmtSetMemoryPolicy(HSAuint32 Node,
 					      HSAuint32 DefaultPolicy,
 					      HSAuint32 AlternatePolicy,

src/openclose.c

@@ -49,9 +49,6 @@ static pid_t parent_pid = -1;
 int hsakmt_debug_level;
 bool hsakmt_forked;
 
-/* zfb is mainly used during emulation */
-int zfb_support;
-
 /* is_forked_child detects when the process has forked since the last
  * time this function was called. We cannot rely on pthread_atfork
  * because the process can fork without calling the fork function in