platform/mellanox: mlxbf-pmc: Use kstrtobool() to check 0/1 input

For setting the enable value, the input should be 0 or 1 only. Use
kstrtobool() in place of kstrtoint() in mlxbf_pmc_enable_store() to
accept only valid input.

Fixes: 423c336 ("platform/mellanox: mlxbf-pmc: Add support for BlueField-3")
Signed-off-by: Shravan Kumar Ramani <shravankr@nvidia.com>
Reviewed-by: David Thompson <davthompson@nvidia.com>
Link: https://lore.kernel.org/r/2ee618c59976bcf1379d5ddce2fc60ab5014b3a9.1751380187.git.shravankr@nvidia.com
[ij: split kstrbool() change to own commit.]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: shravankumarr

drivers/platform/mellanox/mlxbf-pmc.c

@@ -1890,13 +1890,14 @@ static ssize_t mlxbf_pmc_enable_store(struct device *dev,
 {
 	struct mlxbf_pmc_attribute *attr_enable = container_of(
 		attr, struct mlxbf_pmc_attribute, dev_attr);
-	unsigned int en, blk_num;
+	unsigned int blk_num;
 	u32 word;
 	int err;
+	bool en;
 
 	blk_num = attr_enable->nr;
 
-	err = kstrtouint(buf, 0, &en);
+	err = kstrtobool(buf, &en);
 	if (err < 0)
 		return err;
 
@@ -1916,14 +1917,11 @@ static ssize_t mlxbf_pmc_enable_store(struct device *dev,
 			MLXBF_PMC_CRSPACE_PERFMON_CTL(pmc->block[blk_num].counters),
 			MLXBF_PMC_WRITE_REG_32, word);
 	} else {
-		if (en && en != 1)
-			return -EINVAL;
-
 		err = mlxbf_pmc_config_l3_counters(blk_num, false, !!en);
 		if (err)
 			return err;
 
-		if (en == 1) {
+		if (en) {
 			err = mlxbf_pmc_config_l3_counters(blk_num, true, false);
 			if (err)
 				return err;