Fix CS8900 regression on impa7 board

The following error was seen on impa7 board, due to its use of a 32-bit bus
on CS8900.
cs8900.c:137:37: error: macro "get_reg_init_bus" passed 2 arguments, but takes just 1

This patch gives the macro the correct number of arguments

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

drivers/net/cs8900.c

@@ -56,7 +56,7 @@
 #define REG_READ(a) readl((a))
 
 /* we don't need 16 bit initialisation on 32 bit bus */
-#define get_reg_init_bus(x) get_reg((x))
+#define get_reg_init_bus(r,d) get_reg((r),(d))
 
 #else