Use normal font for functional key label instead of italic font

This change also uses slightly larger font size for functional key
label according to the v4 keyboard design.

Bug: 3216592
Change-Id: I027f109b7748ade8564dc808487d9a6ce1da9761
diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index 3f99cda..5f29af2 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -112,7 +112,7 @@
             <flag name="alignLeft" value="1" />
             <flag name="alignRight" value="2" />
             <flag name="alignBottom" value="8" />
-            <flag name="fontItalic" value="16" />
+            <flag name="fontNormal" value="16" />
         </attr>
         <!-- The unicode that this key generates in manual temporary upper case mode. -->
         <attr name="manualTemporaryUpperCaseCode" format="integer" />