staging: gasket: Fix formatting

Add a space before the open parentheses in an if-statement, to follow
Linux kernel coding style.

Signed-off-by: Waqar Hameed <waqarh@axis.com>
Change-Id: Ic6658aecdde508762117364669872d69dcb0e8e6
diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c
index 004d4d8..da2cb8d 100644
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -511,7 +511,7 @@
 	enum dma_data_direction direction;
 
 	/* Must have a virtual host address or a sg iterator, but not both. */
-	if(!((uintptr_t)host_addr ^ (uintptr_t)sg_iter)) {
+	if (!((uintptr_t)host_addr ^ (uintptr_t)sg_iter)) {
 		dev_err(pg_tbl->device, "need sg_iter or host_addr\n");
 		return -EINVAL;
 	}