minuitwrp: Fix typo in compiler flags

    * This obviously causes a build error if TARGET_RECOVERY_OVERSCAN_PERCENT
      is set to some value in the BoardConfig.

Change-Id: I9d34ba158a1249e58304369918408fb388be8c5c
diff --git a/minuitwrp/libminuitwrp_defaults.go b/minuitwrp/libminuitwrp_defaults.go
index 8cb176f..9f70bc2 100644
--- a/minuitwrp/libminuitwrp_defaults.go
+++ b/minuitwrp/libminuitwrp_defaults.go
@@ -110,7 +110,7 @@
 	}
 
 	if getMakeVars(ctx, "TARGET_RECOVERY_OVERSCAN_PERCENT") != "" {
-		cflags = append(cflags, "-DDOVERSCAN_PERCENT="+getMakeVars(ctx, "TARGET_RECOVERY_OVERSCAN_PERCENT"))
+		cflags = append(cflags, "-DOVERSCAN_PERCENT="+getMakeVars(ctx, "TARGET_RECOVERY_OVERSCAN_PERCENT"))
 	} else {
 		cflags = append(cflags, "-DOVERSCAN_PERCENT=0")
 	}