Mms: Tips "you can't add this picture to your message"

There prompt information of the same when we add
attachment and send out the mms.

I will change the prompt to "message size limit reached,
cannot send out message" while we send out the Mms.

CRs-Fixed: 437853

Change-Id: I614147300f6b603674c583c06902c20f80cc307f