Remove volatile qualifier in get_ram_size() calls

Checkpatch.pl complains about the volatile qualifier in calls to
get_ram_size(). Remove this qualifier in the prototype and in the
calls where it is useless, and leave it only in the function body
where it is needed.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
diff --git a/arch/arm/cpu/arm926ejs/orion5x/dram.c b/arch/arm/cpu/arm926ejs/orion5x/dram.c
index 3e1ff7d..5cc31a9 100644
--- a/arch/arm/cpu/arm926ejs/orion5x/dram.c
+++ b/arch/arm/cpu/arm926ejs/orion5x/dram.c
@@ -53,7 +53,7 @@
 {
 	/* dram_init must store complete ramsize in gd->ram_size */
 	gd->ram_size = get_ram_size(
-			(volatile long *) orion5x_sdram_bar(0),
+			(long *) orion5x_sdram_bar(0),
 			CONFIG_MAX_RAM_BANK_SIZE);
 	return 0;
 }
@@ -65,7 +65,7 @@
 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 		gd->bd->bi_dram[i].start = orion5x_sdram_bar(i);
 		gd->bd->bi_dram[i].size = get_ram_size(
-			(volatile long *) (gd->bd->bi_dram[i].start),
+			(long *) (gd->bd->bi_dram[i].start),
 			CONFIG_MAX_RAM_BANK_SIZE);
 	}
 }