bluetooth: disable LPM_COMBINE_SLEEP_MODE_AND_LPM

From hardware/broadcom/libbt/include/bt_vendor_brcm.h:

    In Mode 0, always set byte 7 to 0. In sleep mode 1, device always
    requires permission to sleep between scans / periodic inquiries regardless
    of the setting of this byte. In sleep mode 1, if byte is set, device must
    have "permission" to sleep during the low power modes of sniff, hold, and
    park. If byte is not set, device can sleep without permission during these
    modes. Permission to sleep in Mode 1 is obtained if the BT_WAKE signal is
    not asserted.

Who the fuck turned this on? *looks at invisiblek*

Change-Id: I747db1c1e288c42c3b0b1385f1b2d69fbbbb3edd