Clear advertising cache if bad advertisement is received

Cache of advertisements from a device was not cleared if a bad
extended advertisement was received which caused that new
advertisements from same device address was rejected as invalid.

Tag: #stability
Test: receive malformed advertisement
Signed-off-by: Henrik Davidsen <h.davidsen@samsung.com>
Change-Id: If07010954fef235b696c8a120026934a7aeadcb5