qcacld-3.0: Fix typo "Compatability"

Replace typo "Compatability" with correct spelling "Compatibility".

Change-Id: I0f7b36def9a9701c640266d41ee78e6836270ea2
CRs-Fixed: 2238297

core/hdd/src/wlan_hdd_ftm.c

@@ -113,7 +113,7 @@ static int wlan_hdd_qcmbr_command(struct hdd_adapter *adapter,
 #ifdef CONFIG_COMPAT
 
 /**
- * wlan_hdd_qcmbr_ioctl() - Compatability-mode QCMBR ioctl handler
+ * wlan_hdd_qcmbr_ioctl() - Compatibility-mode QCMBR ioctl handler
  * @adapter: adapter upon which the ioctl was received
  * @ifr: the ioctl request
  *