hwinfo: Replace ENOTSUP with ENOSYS in documentation

Fix hwinfo documentation claiming API returns ENOTSUP for
unimplemented functions, with the correct ENOSYS

Signed-off-by: Yonatan Schachter <[email protected]>

Author: yonsch

include/drivers/hwinfo.h

@@ -63,7 +63,7 @@ extern "C" {
  * @param length  Max length of the buffer.
  *
  * @retval size of the device ID copied.
- * @retval -ENOTSUP if there is no implementation for the particular device.
+ * @retval -ENOSYS if there is no implementation for the particular device.
  * @retval any negative value on driver specific errors.
  */
 __syscall ssize_t hwinfo_get_device_id(uint8_t *buffer, size_t length);
@@ -87,7 +87,7 @@ ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length);
  * `hwinfo_clear_reset_cause` has been called.
  *
  * @retval zero if successful.
- * @retval -ENOTSUP if there is no implementation for the particular device.
+ * @retval -ENOSYS if there is no implementation for the particular device.
  * @retval any negative value on driver specific errors.
  */
 __syscall int hwinfo_get_reset_cause(uint32_t *cause);
@@ -100,7 +100,7 @@ int z_impl_hwinfo_get_reset_cause(uint32_t *cause);
  * Clears reset cause flags.
  *
  * @retval zero if successful.
- * @retval -ENOTSUP if there is no implementation for the particular device.
+ * @retval -ENOSYS if there is no implementation for the particular device.
  * @retval any negative value on driver specific errors.
  */
 __syscall int hwinfo_clear_reset_cause(void);
@@ -115,7 +115,7 @@ int z_impl_hwinfo_clear_reset_cause(void);
  * Retrieves all `reset_cause` flags that are supported by this device.
  *
  * @retval zero if successful.
- * @retval -ENOTSUP if there is no implementation for the particular device.
+ * @retval -ENOSYS if there is no implementation for the particular device.
  * @retval any negative value on driver specific errors.
  */
 __syscall int hwinfo_get_supported_reset_cause(uint32_t *supported);