ASACORE-775 About Feature rework - change status value

The status value of 0x9121 is being used by a different
development branch. To avoid conflicts I have changed
the value of ER_ABOUT_DEFAULT_LANGUAGE_NOT_SPECIFIED to
0x9122.

Change-Id: I330dd8c79aab28153b1f76f63087745aa4ebe1a1
Signed-off-by: George Nash <georgen@qce.qualcomm.com>