bluetooth drivers: update
Bluetooth: hci_ath: Vote off Uart clock when BT is in Sleep

When there is no communication between the BTHOST and BTSOC,
UART clock should be vote off, otherwise Uart module will
not unlock wake lock which doesn't allow system to go sleep.

CRs-fixed: 413053
Change-Id: I8067132d5c376551bf104e69ac916addbbda3d1d
Signed-off-by: Ram Mohan Korukonda <rkorukon@codeaurora.org>
blueesleep: increased TX_TIMER_INTERVAL to 10