clk: qcom: clk-branch: Use true and false for boolean values

Return statements in functions returning bool should use true or false
instead of an integer value.

This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/qcom/clk-branch.c

@@ -18,7 +18,7 @@ static bool clk_branch_in_hwcg_mode(const struct clk_branch *br)
 	u32 val;
 
 	if (!br->hwcg_reg)
-		return 0;
+		return false;
 
 	regmap_read(br->clkr.regmap, br->hwcg_reg, &val);