Increase MR4 poll interval.

Change-Id: Ib4e10f18cd89d90c6ec8e0572b9ad7f7f8a0b059
diff --git a/board/freescale/imx8mq_phanbell/ddr/lpddr4_timing_micron_1gb.c b/board/freescale/imx8mq_phanbell/ddr/lpddr4_timing_micron_1gb.c
index dc761c3..7e43da1 100644
--- a/board/freescale/imx8mq_phanbell/ddr/lpddr4_timing_micron_1gb.c
+++ b/board/freescale/imx8mq_phanbell/ddr/lpddr4_timing_micron_1gb.c
@@ -19,7 +19,7 @@
 	{ 0x3d400000, 0xa1080020 },
 	{ 0x3d400028, 0x0 },
 	{ 0x3d400020, 0x203 },
-	{ 0x3d400024, 0x3e800 },
+	{ 0x3d400024, 0x186a000 },
 	{ 0x3d400064, 0x610090 },
 	{ 0x3d4000d0, 0xc003061c },
 	{ 0x3d4000d4, 0x9e0000 },
@@ -59,7 +59,7 @@
 	{ 0x3d400214, 0x7070707 },
 	{ 0x3d400218, 0xf070707 },
 	{ 0x3d402020, 0x1 },
-	{ 0x3d402024, 0xd0c0 },
+	{ 0x3d402024, 0x518b00 },
 	{ 0x3d402050, 0x20d040 },
 	{ 0x3d402064, 0x14001f },
 	{ 0x3d4020dc, 0x940009 },