PXA: Rename pxa_dram_init to pxa2xx_dram_init

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
diff --git a/board/balloon3/balloon3.c b/board/balloon3/balloon3.c
index ebee5e1..f360323 100644
--- a/board/balloon3/balloon3.c
+++ b/board/balloon3/balloon3.c
@@ -60,7 +60,7 @@
 
 int dram_init(void)
 {
-	pxa_dram_init();
+	pxa2xx_dram_init();
 	gd->ram_size = PHYS_SDRAM_1_SIZE;
 	return 0;
 }