test: harmonize main function signatures

Use ODP_UNUSED for intentionally unused variables of functions.
Thereby, harmonizing the main function signatures across multiple
files.

Signed-off-by: Kameswar Rao Vaddina <kameswar.vaddina@nokia.com>

example/ipfragreass/odp_ipfragreass.c

@@ -228,7 +228,7 @@ static int run_worker(void *arg ODP_UNUSED)
 /**
  * ODP fragmentation and reassembly example main function
  */
-int main(void)
+int main(int argc ODP_UNUSED, char *argv[] ODP_UNUSED)
 {
 	odp_instance_t instance;
 	odp_pool_t fragment_pool;

helper/test/debug.c

@@ -10,7 +10,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main(void)
+int main(int argc ODP_UNUSED, char *argv[] ODP_UNUSED)
 {
 	printf("\nHelper library version is: %s\n\n", odph_version_str());
 

helper/test/macros.c

@@ -8,7 +8,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-int main(void)
+int main(int argc ODP_UNUSED, char *argv[] ODP_UNUSED)
 {
 	int a, b;
 	int ret = 0;

helper/test/parse.c

@@ -342,7 +342,7 @@ static int test_ipv4(void)
 	return 0;
 }
 
-int main(void)
+int main(int argc ODP_UNUSED, char *argv[] ODP_UNUSED)
 {
 	int ret = 0;
 

helper/test/version.c

@@ -8,7 +8,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main(void)
+int main(int argc ODP_UNUSED, char *argv[] ODP_UNUSED)
 {
 	printf("\nHelper library versions is: %s\n\n", odph_version_str());
 

test/miscellaneous/odp_api_headers.c

@@ -8,7 +8,7 @@
 #include <odp_api.h>
 #include <odp/helper/odph_api.h>
 
-int main(void)
+int main(int argc ODP_UNUSED, char *argv[] ODP_UNUSED)
 {
 	odp_instance_t inst;