defconfig: mdm9630: enable wakelocks

Some drivers such as WLAN need wakelock capabilities
for some of their use cases. Enable wakelocks for
their benefit.

Change-Id: I8bc1b1e98175057d06cc7f7c2d53be464ac8a72d
Signed-off-by: Chandra Ramachandran <cramacha@codeaurora.org>