Bluetooth: Entry for LDO4 and LDO5

LD0-4 need to be voted by bluetooth platform
driver in order to keep LDO-5 ON during APPS
suspend on mdmcalifornium platforms when bluetooth
is turned ON as per power up sequence. Currently
LDO-4 is only voted by USB driver when USB is
connected. On removing USB,LDO-4 is turned off
resulting LDO-5 turned off.

Change-Id: I86f7279a036d4923e952c0209d28f0467d3cff82
Signed-off-by: Mahesh Kumar Sharma <smahesh@codeaurora.org>