ARM: AM33xx+: Update ioregs to pass different values

Currently same value is programmed for all ioregs. This is not
the case for all SoC's like AM4372. So adding a structure for ioregs
and updating in all board files. And also return from config_cmd_ctrl()
and config_ddr_data() functions if data is not passed.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
[trini: Fixup dxr2, cm_t335, adapt pcm051 rev3]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/board/isee/igep0033/board.c b/board/isee/igep0033/board.c
index 6a8ca2b..089a835 100644
--- a/board/isee/igep0033/board.c
+++ b/board/isee/igep0033/board.c
@@ -77,9 +77,17 @@
 	enable_board_pin_mux();
 }
 
+const struct ctrl_ioregs ioregs = {
+	.cm0ioctl		= K4B2G1646EBIH9_IOCTRL_VALUE,
+	.cm1ioctl		= K4B2G1646EBIH9_IOCTRL_VALUE,
+	.cm2ioctl		= K4B2G1646EBIH9_IOCTRL_VALUE,
+	.dt0ioctl		= K4B2G1646EBIH9_IOCTRL_VALUE,
+	.dt1ioctl		= K4B2G1646EBIH9_IOCTRL_VALUE,
+};
+
 void sdram_init(void)
 {
-	config_ddr(400, K4B2G1646EBIH9_IOCTRL_VALUE, &ddr3_data,
+	config_ddr(400, &ioregs, &ddr3_data,
 		   &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
 }
 #endif