BT - Not possible to accept incoming obex transfers using key-presses.

It is not possible to accept/reject an incoming obex file transfer
using key-press. Only touch screen press was working.

With this fix, key press down is not ignored and it is possible
to accept/reject an incoming obex file transfer with key-press.

ST-Ericsson Change ID: ER260817
Change-Id: Ic7f668bd1b0efa549d0218edc8719efee1984941

Signed-off-by: Christian Bejram <christian.bejram@stericsson.com>