r8a7794 SDHI ch0 has SD_DMACR which is located in 0x324.
This patch updates register size
Based on work for the r8a7790 by Kuninori Morimoto.
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
 
        sdhi0: sd@ee100000 {
                compatible = "renesas,sdhi-r8a7794";
-               reg = <0 0xee100000 0 0x200>;
+               reg = <0 0xee100000 0 0x328>;
                interrupts = <GIC_SPI 165 IRQ_TYPE_LEVEL_HIGH>;
                clocks = <&mstp3_clks R8A7794_CLK_SDHI0>;
                dmas = <&dmac0 0xcd>, <&dmac0 0xce>,