clk: bcm/kona: Silence sparse warnings

drivers/clk/bcm/clk-kona.c:1243:16: warning: odd constant _Bool cast (ffffffffffffffea becomes 1)
Reviewed-by: Alex Elder <elder@linaro.org>
Cc: Tim Kryger <tim.kryger@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/bcm/clk-kona.c

@@ -1240,7 +1240,7 @@ static bool __kona_clk_init(struct kona_clk *bcm_clk)
 	default:
 		BUG();
 	}
-	return -EINVAL;
+	return false;
 }
 
 /* Set a CCU and all its clocks into their desired initial state */