clk: mxs: fix ref_io clock definition

The definition of clocks ref_io0 and ref_io1 were inverted.  It causes
a mmc regression on some boards right away.  Fix the regression by
correcting the ref_io clock definition.
Reported-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NMike Turquette <mturquette@linaro.org>

drivers/clk/mxs/clk-imx28.c

@@ -245,8 +245,8 @@ int __init mx28_clocks_init(void)
 	clks[pll2] = mxs_clk_pll("pll2", "ref_xtal", PLL2CTRL0, 23, 50000000);
 	clks[ref_cpu] = mxs_clk_ref("ref_cpu", "pll0", FRAC0, 0);
 	clks[ref_emi] = mxs_clk_ref("ref_emi", "pll0", FRAC0, 1);
-	clks[ref_io0] = mxs_clk_ref("ref_io0", "pll0", FRAC0, 2);
-	clks[ref_io1] = mxs_clk_ref("ref_io1", "pll0", FRAC0, 3);
+	clks[ref_io1] = mxs_clk_ref("ref_io1", "pll0", FRAC0, 2);
+	clks[ref_io0] = mxs_clk_ref("ref_io0", "pll0", FRAC0, 3);
 	clks[ref_pix] = mxs_clk_ref("ref_pix", "pll0", FRAC1, 0);
 	clks[ref_hsadc] = mxs_clk_ref("ref_hsadc", "pll0", FRAC1, 1);
 	clks[ref_gpmi] = mxs_clk_ref("ref_gpmi", "pll0", FRAC1, 2);