New channel ID for LGU+ customization

Changes:
- ro.carrier=lguplus
- channelId=217 (decimal)

Change-Id: I7125b59fef14214a9ff63522a2170ad3574d481a
Signed-off-by: zhengyd2 <zhengyd2@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2566973
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Tarciano Facco Pegoraro <tarciano@motorola.com>
Reviewed-by: Tao Sun <suntao2@motorola.com>
Submit-Approved: Jira Key
Reviewed-by: Jinxuan Cui <cuijx1@lenovo.com>

qcom/carrier-channel-ids.dtsi

@@ -231,7 +231,7 @@
 		"retkr",	/* 214 */
 		"retjio",	/* 215 */
 		"ymobile",	/* 216 */
-		"undefined",	/* 217 */
+		"lguplus",	/* 217 */
 		"undefined",	/* 218 */
 		"undefined",	/* 219 */
 		"undefined",	/* 220 */