ARM: OMAP2+: Fix a typo

A 'a' is missing in "powerdomin".
Add it.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/ec20fd5c347bf74963532e95282f850d209d84d5.1730539664.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Author: tititiou36

arch/arm/mach-omap2/powerdomain.c

@@ -523,7 +523,7 @@ int pwrdm_get_mem_bank_count(struct powerdomain *pwrdm)
  * Set the powerdomain @pwrdm's next power state to @pwrst.  The powerdomain
  * may not enter this state immediately if the preconditions for this state
  * have not been satisfied.  Returns -EINVAL if the powerdomain pointer is
- * null or if the power state is invalid for the powerdomin, or returns 0
+ * null or if the power state is invalid for the powerdomain, or returns 0
  * upon success.
  */
 int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)