rv/dot2K: add 'static' qualifier for local variable

Following Daniel's suggestion, fix similar warning
in template files, which would prevent new monitors
from such warning.

Link: https://lkml.kernel.org/r/20220824034357.2014202-3-zengheng4@huawei.com

Cc: <mingo@redhat.com>
Fixes:	24bce201 ("tools/rv: Add dot2k")
Suggested-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

tools/verification/dot2/dot2k_templates/main_global.c

@@ -27,7 +27,7 @@
  *
  * The rv monitor reference is needed for the monitor declaration.
  */
-struct rv_monitor rv_MODEL_NAME;
+static struct rv_monitor rv_MODEL_NAME;
 DECLARE_DA_MON_GLOBAL(MODEL_NAME, MIN_TYPE);
 
 /*
@@ -63,7 +63,7 @@ TRACEPOINT_DETACH
 /*
  * This is the monitor register section.
  */
-struct rv_monitor rv_MODEL_NAME = {
+static struct rv_monitor rv_MODEL_NAME = {
 	.name = "MODEL_NAME",
 	.description = "auto-generated MODEL_NAME",
 	.enable = enable_MODEL_NAME,

tools/verification/dot2/dot2k_templates/main_per_cpu.c

@@ -27,7 +27,7 @@
  *
  * The rv monitor reference is needed for the monitor declaration.
  */
-struct rv_monitor rv_MODEL_NAME;
+static struct rv_monitor rv_MODEL_NAME;
 DECLARE_DA_MON_PER_CPU(MODEL_NAME, MIN_TYPE);
 
 /*
@@ -63,7 +63,7 @@ TRACEPOINT_DETACH
 /*
  * This is the monitor register section.
  */
-struct rv_monitor rv_MODEL_NAME = {
+static struct rv_monitor rv_MODEL_NAME = {
 	.name = "MODEL_NAME",
 	.description = "auto-generated MODEL_NAME",
 	.enable = enable_MODEL_NAME,

tools/verification/dot2/dot2k_templates/main_per_task.c

@@ -27,7 +27,7 @@
  *
  * The rv monitor reference is needed for the monitor declaration.
  */
-struct rv_monitor rv_MODEL_NAME;
+static struct rv_monitor rv_MODEL_NAME;
 DECLARE_DA_MON_PER_TASK(MODEL_NAME, MIN_TYPE);
 
 /*
@@ -63,7 +63,7 @@ TRACEPOINT_DETACH
 /*
  * This is the monitor register section.
  */
-struct rv_monitor rv_MODEL_NAME = {
+static struct rv_monitor rv_MODEL_NAME = {
 	.name = "MODEL_NAME",
 	.description = "auto-generated MODEL_NAME",
 	.enable = enable_MODEL_NAME,