clk: uniphier: Fix update register for CPU-gear

Need to set the update bit in UNIPHIER_CLK_CPUGEAR_UPD to update
the CPU-gear value.

Fixes: d08f1f0d ("clk: uniphier: add CPU-gear change (cpufreq) support")
Cc: linux-stable@vger.kernel.org
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/uniphier/clk-uniphier-cpugear.c

@@ -47,7 +47,7 @@ static int uniphier_clk_cpugear_set_parent(struct clk_hw *hw, u8 index)
 		return ret;
 
 	ret = regmap_write_bits(gear->regmap,
-				gear->regbase + UNIPHIER_CLK_CPUGEAR_SET,
+				gear->regbase + UNIPHIER_CLK_CPUGEAR_UPD,
 				UNIPHIER_CLK_CPUGEAR_UPD_BIT,
 				UNIPHIER_CLK_CPUGEAR_UPD_BIT);
 	if (ret)