dragon: wifi: updated btc_param3 in cal file

A small fraction of BT packets had their preamble attenutated by 3 to
10 dBm due to the antenna not switching over in time. Fix this by
making btc_params 3 smaller.

TEST=run "wlutil btc_params 3" command and verify that it reads back a
value of 0x4b.

Change-Id: Idc2078b0abf27a7dc32e9d366787038893d9af4c
Signed-off-by: Sameer Nanda <snanda@google.com>
1 file changed