Accept upper case hexadecimal digits in SimpleIpV6AddressValidator.

CCBUG: 314811
(cherry picked from commit 332a1fae)

libs/ui/simpleipv6addressvalidator.cpp

@@ -47,7 +47,7 @@ QValidator::State SimpleIpV6AddressValidator::validate(QString &address, int &po
 
 QValidator::State SimpleIpV6AddressValidator::checkWithInputMask(QString &value, int &pos) const
 {
-    QRegExpValidator v(QRegExp("([0-9a-f]{1,4}|:)+"), 0);
+    QRegExpValidator v(QRegExp("([0-9a-fA-F]{1,4}|:)+"), 0);
 
     return v.validate(value, pos);
 }