OMAP3630: PM: don't warn the user with a trace in case of PM34XX_ERRATUM

In case in user has a OMAP3630 < ES1.2 the kernel should warn the user
about the ERRATUM, but using pr_warn instead of WARN_ON is already
enough, as there is nothing else the user can do besides changing the
board.
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/cpuidle34xx.c

@@ -464,7 +464,7 @@ void omap_init_power_states(void)
 	if (IS_PM34XX_ERRATUM(PM_SDRC_WAKEUP_ERRATUM_i583)) {
 		omap3_power_states[OMAP3_STATE_C7].valid = 0;
 		cpuidle_params_table[OMAP3_STATE_C7].valid = 0;
-		WARN_ONCE(1, "%s: core off state C7 disabled due to i583\n",
+		pr_warn("%s: core off state C7 disabled due to i583\n",
 				__func__);
 	}
 }

arch/arm/mach-omap2/pm34xx.c

@@ -928,8 +928,7 @@ void omap3_pm_off_mode_enable(int enable)
 				pwrst->pwrdm == core_pwrdm &&
 				state == PWRDM_POWER_OFF) {
 			pwrst->next_state = PWRDM_POWER_RET;
-			WARN_ONCE(1,
-				"%s: Core OFF disabled due to errata i583\n",
+			pr_warn("%s: Core OFF disabled due to errata i583\n",
 				__func__);
 		} else {
 			pwrst->next_state = state;