qcacld-3.0: Override WLAN_PROFILE to default only if it is unset

Currently WLAN_PROFILE is overridden to default in all cases.
In many targets, defconfig other than default_defconfig needs
to be picked, so set WLAN_PROFILE to default only if it is not
set before.

Change-Id: Ia9a5ad7c9eedd56be59418371867107258e65ea0
CRs-Fixed: 2818090
1 file changed