clk: xgene: Fix divider with non-zero shift value

commit 1382ea63 upstream.

The X-Gene clock driver missed the divider shift operation when
set the divider value.
Signed-off-by: Loc Ho <lho@apm.com>
Fixes: 308964ca ("clk: Add APM X-Gene SoC clock driver")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

drivers/clk/clk-xgene.c

@@ -351,7 +351,8 @@ static int xgene_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 		/* Set new divider */
 		data = xgene_clk_read(pclk->param.divider_reg +
 				pclk->param.reg_divider_offset);
-		data &= ~((1 << pclk->param.reg_divider_width) - 1);
+		data &= ~((1 << pclk->param.reg_divider_width) - 1)
+				<< pclk->param.reg_divider_shift;
 		data |= divider;
 		xgene_clk_write(data, pclk->param.divider_reg +
 					pclk->param.reg_divider_offset);