lea-manager: rename blefastpair to lea_manager [1/2]

PD#SWPL-196827

Problem:
The ble fast pair is confused with google fast pair

Solution:
Rename blefastpair to lea_manager.

Verify:
AD401

Change-Id: I2686a5c9e1666b263f759b77060f239e0633c80b
Signed-off-by: ye.he <ye.he@amlogic.com>
12 files changed