cpufreq: Use str_enable_disable()-like helpers

Replace ternary (condition ? "enable" : "disable") syntax with helpers
from string_choices.h because:

 1. Simple function call with one argument is easier to read.  Ternary
    operator has three arguments and with wrapping might lead to quite
    long code.
 2. Is slightly shorter thus also easier to read.
 3. It brings uniformity in the text - same string.
 4. Allows deduping by the linker, which results in a smaller binary
    file.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://patch.msgid.link/20250114190600.846651-1-krzysztof.kozlowski@linaro.org
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: krzk

drivers/cpufreq/cpufreq.c

@@ -25,6 +25,7 @@
 #include <linux/mutex.h>
 #include <linux/pm_qos.h>
 #include <linux/slab.h>
+#include <linux/string_choices.h>
 #include <linux/suspend.h>
 #include <linux/syscore_ops.h>
 #include <linux/tick.h>
@@ -602,12 +603,12 @@ static ssize_t store_boost(struct kobject *kobj, struct kobj_attribute *attr,
 
 	if (cpufreq_boost_trigger_state(enable)) {
 		pr_err("%s: Cannot %s BOOST!\n",
-		       __func__, enable ? "enable" : "disable");
+		       __func__, str_enable_disable(enable));
 		return -EINVAL;
 	}
 
 	pr_debug("%s: cpufreq BOOST %s\n",
-		 __func__, enable ? "enabled" : "disabled");
+		 __func__, str_enabled_disabled(enable));
 
 	return count;
 }
@@ -2812,7 +2813,7 @@ int cpufreq_boost_trigger_state(int state)
 	write_unlock_irqrestore(&cpufreq_driver_lock, flags);
 
 	pr_err("%s: Cannot %s BOOST\n",
-	       __func__, state ? "enable" : "disable");
+	       __func__, str_enable_disable(state));
 
 	return ret;
 }

drivers/cpufreq/powernv-cpufreq.c

@@ -18,6 +18,7 @@
 #include <linux/of.h>
 #include <linux/reboot.h>
 #include <linux/slab.h>
+#include <linux/string_choices.h>
 #include <linux/cpu.h>
 #include <linux/hashtable.h>
 #include <trace/events/power.h>
@@ -281,7 +282,7 @@ static int init_powernv_pstates(void)
 	pr_info("cpufreq pstate min 0x%x nominal 0x%x max 0x%x\n", pstate_min,
 		pstate_nominal, pstate_max);
 	pr_info("Workload Optimized Frequency is %s in the platform\n",
-		(powernv_pstate_info.wof_enabled) ? "enabled" : "disabled");
+		str_enabled_disabled(powernv_pstate_info.wof_enabled));
 
 	pstate_ids = of_get_property(power_mgt, "ibm,pstate-ids", &len_ids);
 	if (!pstate_ids) {