iommu/fsl: Add void declarations in zero-arg functions.

Added explicit void declarations to zero-argument function headers.
The following coccinelle script was used:
@addvoid@
identifier f;
@@

f(
+ void
 ) { ... }

Signed-off-by: Chi Pham <fempsci@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/fsl_pamu.c

@@ -92,7 +92,7 @@ struct gen_pool *spaace_pool;
  * subwindow count per liodn.
  *
  */
-u32 pamu_get_max_subwin_cnt()
+u32 pamu_get_max_subwin_cnt(void)
 {
 	return max_subwindow_count;
 }

drivers/iommu/fsl_pamu_domain.c

@@ -1156,7 +1156,7 @@ static struct iommu_ops fsl_pamu_ops = {
 	.remove_device	= fsl_pamu_remove_device,
 };
 
-int pamu_domain_init()
+int pamu_domain_init(void)
 {
 	int ret = 0;