Add /misc partition for OTA updater

Change-Id: I88fa18256a87f2cf4459d1b93049345e40580081

recovery.fstab

@@ -10,3 +10,4 @@
 /modemst2		emmc		/dev/block/platform/msm_sdcc.1/by-name/modemst2	flags=backup=1;subpartitionof=/efs
 /external_sd	vfat		/dev/block/mmcblk1p1 /dev/block/mmcblk1			flags=display="Micro SDcard";storage;wipeingui;removable
 /usbstorage	vfat		/dev/block/sda1 /dev/block/sda				flags=display="USB Storage";storage;wipeingui;removable
+/misc		emmc		/dev/block/platform/msm_sdcc.1/by-name/fota