mx6qarm2: imximage_mx6dl.cfg update to fix tINIT3 violation

Having had a similar board and memory part under logic analyzer, a
tINIT3 violation was measured.  The fix was involved keeping tXPR and
SDE_to_RST at the power-on defaults and setting RST_to_CKE the JEDEC
value for LPDDR2.

Cc: Jason Liu <jason.hui.liu@nxp.com>
Cc: Ye Li <ye.li@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

board/freescale/mx6qarm2/imximage_mx6dl.cfg

@@ -234,7 +234,7 @@ DATA 4 0x021b0018 0x0000174C
 /* MMDC0_MDRWD;*/
 DATA 4 0x021b002c 0x0f9f26d2
 /* MMDC0_MDOR */
-DATA 4 0x021b0030 0x0000020e
+DATA 4 0x021b0030 0x009f0e10
 /* MMDC0_MDCFG3LP */
 DATA 4 0x021b0038 0x00190778
 /* MMDC0_MDOTC */
@@ -263,7 +263,7 @@ DATA 4 0x021b4018 0x0000174C
 /* MMDC1_MDRWD;*/
 DATA 4 0x021b402c 0x0f9f26d2
 /* MMDC1_MDOR */
-DATA 4 0x021b4030 0x0000020e
+DATA 4 0x021b4030 0x009f0e10
 /* MMDC1_MDCFG3LP */
 DATA 4 0x021b4038 0x00190778
 /* MMDC1_MDOTC */