powerpc: Fix kernel-doc comments in fsl_gtm.c

Fix some function names in kernel-doc comments.

Signed-off-by: Yang Li <[e-mail]>
Reviewed-by: Randy Dunlap <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>
Link: https://msgid.link/[e-mail]

arch/powerpc/sysdev/fsl_gtm.c

···
 static LIST_HEAD(gtms);
 
 /**
- * gtm_get_timer - request GTM timer to use it with the rest of GTM API
+ * gtm_get_timer16 - request GTM timer to use it with the rest of GTM API
  * Context:	non-IRQ
  *
  * This function reserves GTM timer for later use. It returns gtm_timer
···
 EXPORT_SYMBOL(gtm_get_timer16);
 
 /**
- * gtm_get_specific_timer - request specific GTM timer
+ * gtm_get_specific_timer16 - request specific GTM timer
  * @gtm:	specific GTM, pass here GTM's device_node->data
  * @timer:	specific timer number, Timer1 is 0.
  * Context:	non-IRQ
···
 EXPORT_SYMBOL(gtm_set_timer16);
 
 /**
- * gtm_set_exact_utimer16 - (re)set 16 bits timer
+ * gtm_set_exact_timer16 - (re)set 16 bits timer
  * @tmr:	pointer to the gtm_timer structure obtained from gtm_get_timer
  * @usec:	timer interval in microseconds
  * @reload:	if set, the timer will reset upon expiry rather than