leds: lgm: Fix spelling mistake "prepate" -> "prepare"

There is a spelling mistake in a dev_err error message. Fix it.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NPavel Machek <pavel@ucw.cz>

drivers/leds/blink/leds-lgm-sso.c

@@ -793,7 +793,7 @@ static int intel_sso_led_probe(struct platform_device *pdev)
 
 	ret = clk_prepare_enable(priv->gclk);
 	if (ret) {
-		dev_err(dev, "Failed to prepate/enable sso gate clock!\n");
+		dev_err(dev, "Failed to prepare/enable sso gate clock!\n");
 		return ret;
 	}