dalvik: dalvik device extension pack.

Add support for customer device extension

(cherry picked from commit 11499df326462bfe25890a35c6abbf019ff7784e)
(cherry picked from commit e03b8f8da9cf4eef64cedf39ce9ca90d26ce5124)
(cherry picked from commit fb360be406f35b9591f12c61936657f03cc5880f)

Change-Id: I65b19f40d516b7163e19756d756446f284ac3abf