treewide: Fix typo compatability -> compatibility

Even though 'compatability' has a dedicated entry in the Wiktionary,
it's listed as 'Mispelling of compatibility'. Fix it.

Signed-off-by: Laurent Pinchart <[e-mail]>
Acked-by: David S. Miller <[e-mail]>
Acked-by: Daniel Vetter <[e-mail]> for the atomic_helper.c
Signed-off-by: Jiri Kosina <[e-mail]>

arch/metag/include/asm/elf.h

···
 #define R_METAG_RELBRANCH                4
 #define R_METAG_GETSETOFF                5
 
-/* Backward compatability */
+/* Backward compatibility */
 #define R_METAG_REG32OP1                 6
 #define R_METAG_REG32OP2                 7
 #define R_METAG_REG32OP3                 8

arch/powerpc/kvm/book3s.c

···
 {
 	/*
 	 * We always return 0 for book3s. We check
-	 * for compatability while loading the HV
+	 * for compatibility while loading the HV
 	 * or PR module
 	 */
 	return 0;

arch/sparc/include/uapi/asm/pstate.h

···
 #define VERS_MAXTL	_AC(0x000000000000ff00,UL) /* Max Trap Level.	*/
 #define VERS_MAXWIN	_AC(0x000000000000001f,UL) /* Max RegWindow Idx.*/
 
-/* Compatability Feature Register (%asr26), SPARC-T4 and later  */
+/* Compatibility Feature Register (%asr26), SPARC-T4 and later  */
 #define CFR_AES		_AC(0x0000000000000001,UL) /* Supports AES opcodes     */
 #define CFR_DES		_AC(0x0000000000000002,UL) /* Supports DES opcodes     */
 #define CFR_KASUMI	_AC(0x0000000000000004,UL) /* Supports KASUMI opcodes  */

drivers/gpu/drm/drm_atomic_helper.c

···
  * This function shuts down all the outputs that need to be shut down and
  * prepares them (if required) with the new mode.
  *
- * For compatability with legacy crtc helpers this should be called before
+ * For compatibility with legacy crtc helpers this should be called before
  * drm_atomic_helper_commit_planes(), which is what the default commit function
  * does. But drivers with different needs can group the modeset commits together
  * and do the plane commits at the end. This is useful for drivers doing runtime
···
  * This function enables all the outputs with the new configuration which had to
  * be turned off for the update.
  *
- * For compatability with legacy crtc helpers this should be called after
+ * For compatibility with legacy crtc helpers this should be called after
  * drm_atomic_helper_commit_planes(), which is what the default commit function
  * does. But drivers with different needs can group the modeset commits together
  * and do the plane commits at the end. This is useful for drivers doing runtime

drivers/media/dvb-frontends/au8522_dig.c

···
 MODULE_PARM_DESC(debug, "Enable verbose debug messages");
 
 module_param(zv_mode, int, 0644);
-MODULE_PARM_DESC(zv_mode, "Turn on/off ZeeVee modulator compatability mode (default:on).\n"
+MODULE_PARM_DESC(zv_mode, "Turn on/off ZeeVee modulator compatibility mode (default:on).\n"
 	"\t\ton - modified AU8522 QAM256 initialization.\n"
 	"\t\tProvides faster lock when using ZeeVee modulator based sources");
 

drivers/net/wireless/ipw2x00/ipw2100.h

···
 #define IPW_REG_GPIO			IPW_REG_DOMAIN_0_OFFSET + 0x0030
 #define IPW_REG_FW_TYPE                 IPW_REG_DOMAIN_1_OFFSET + 0x0188
 #define IPW_REG_FW_VERSION 		IPW_REG_DOMAIN_1_OFFSET + 0x018C
-#define IPW_REG_FW_COMPATABILITY_VERSION IPW_REG_DOMAIN_1_OFFSET + 0x0190
+#define IPW_REG_FW_COMPATIBILITY_VERSION IPW_REG_DOMAIN_1_OFFSET + 0x0190
 
 #define IPW_REG_INDIRECT_ADDR_MASK	0x00FFFFFC