clk: bcm63xx-gate: fix last clock availability

In order to make the last clock available, maxbit has to be set to the
highest bit value plus 1.

Fixes: 1c099779 ("clk: add BCM63XX gated clock controller driver")
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://lore.kernel.org/r/20200609110846.4029620-1-noltari@gmail.comReviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/bcm/clk-bcm63xx-gate.c

@@ -155,6 +155,7 @@ static int clk_bcm63xx_probe(struct platform_device *pdev)
 
 	for (entry = table; entry->name; entry++)
 		maxbit = max_t(u8, maxbit, entry->bit);
+	maxbit++;
 
 	hw = devm_kzalloc(&pdev->dev, struct_size(hw, data.hws, maxbit),
 			  GFP_KERNEL);