xilinx: Fix xlnx,mio_bank property

s/xlnx,mio_bank/xlnx,mio-bank/g

DT binding is describing mio-bank not mio_bank that's why fix all DTSes and
also driver itself.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/dts/versal-mini-emmc0.dts b/arch/arm/dts/versal-mini-emmc0.dts
index 7f57d23..7826a28 100644
--- a/arch/arm/dts/versal-mini-emmc0.dts
+++ b/arch/arm/dts/versal-mini-emmc0.dts
@@ -43,7 +43,7 @@
 			clocks = <&clk25 &clk25>;
 			xlnx,device_id = <0>;
 			no-1-8-v;
-			xlnx,mio_bank = <0>;
+			xlnx,mio-bank = <0>;
 			#stream-id-cells = <1>;
 		};
 	};