Change Exynos.H263.Encoder alignment to 4x4.

Bug: 19014147
Change-Id: Id6b0821ddc0abff51f83f8f1c5bda11d3c167027
diff --git a/media_codecs.xml b/media_codecs.xml
index b5925f5..0ffad5b 100644
--- a/media_codecs.xml
+++ b/media_codecs.xml
@@ -148,7 +148,7 @@
             <Quirk name="requires-allocate-on-input-ports" />
             <Quirk name="requires-allocate-on-output-ports" />
             <Limit name="size" min="32x32" max="1088x1152" />
-            <Limit name="alignment" value="2x2" />
+            <Limit name="alignment" value="4x4" />
             <Limit name="block-size" value="16x16" />
             <Limit name="blocks-per-second" min="1" max="489600" />
             <Limit name="bitrate" range="1-40000000" />