Fix code warning.

Change-Id: Ib11fb49f528d3688351ae349d5b4e307c28b3967
diff --git a/mbtk/mbtk_gnssd/gnss_6228.c b/mbtk/mbtk_gnssd/gnss_6228.c
index 9bbe8f4..17ecda1 100755
--- a/mbtk/mbtk_gnssd/gnss_6228.c
+++ b/mbtk/mbtk_gnssd/gnss_6228.c
Binary files differ