clk: qcom: Fix clk_rcg2_is_enabled() check

If the bit is set the clock is off so we should be checking for
a clear bit, not a set bit. Invert the logic.

Fixes: bcd61c0f535a (clk: qcom: Add support for root clock generators (RCGs))
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c
index 00f878a..0996a3a 100644
--- a/drivers/clk/qcom/clk-rcg2.c
+++ b/drivers/clk/qcom/clk-rcg2.c
@@ -55,7 +55,7 @@
 	if (ret)
 		return ret;
 
-	return (cmd & CMD_ROOT_OFF) != 0;
+	return (cmd & CMD_ROOT_OFF) == 0;
 }
 
 static u8 clk_rcg2_get_parent(struct clk_hw *hw)