ARM: dts: msm: Enable QCA9379 bluetooth device for apq8009

Enable blsp1_uart2_hs which provide communication between
QCA9379 BT and HOST.
BT enable is controlled through msm gpio 47. So, add device node for it.

Change-Id: I8d59e96e14167baaaf6310c24500e552d2c1d00c
Signed-off-by: Tim Jiang <tjiang@codeaurora.org>