clk: ns2: Correct SDIO bits

Corrected the bits for power and iso.

Signed-off-by: Bharat Kumar Reddy Gooty <bharat.gooty@broadcom.com>
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Fixes: f7225a83

 ("clk: ns2: add clock support for Broadcom Northstar 2 SoC")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>