app: recovery: Fix write to misc partition

For UFS set the lun before writing to the partition.

Change-Id: I416c34fafd320456fc9671307f4ed1713bf25f39
diff --git a/app/aboot/recovery.c b/app/aboot/recovery.c
index 15797a1..96441e2 100644
--- a/app/aboot/recovery.c
+++ b/app/aboot/recovery.c
@@ -592,6 +592,10 @@
 
 		if (scratch_addr != buf)
 			memcpy(scratch_addr, buf, size);
+
+		/* Set Lun for misc partition */
+		mmc_set_lun(partition_get_lun(index));
+
 		if (mmc_write(ptn + offset, aligned_size, (unsigned int *)scratch_addr))
 		{
 			dprintf(CRITICAL, "Writing MMC failed\n");