[ARM] Make ARM SCSI drivers build

2.5.46 appears to require drivers/scsi/scsi.h to be included before
drivers/scsi/hosts.h.  Make this happen in the Acorn SCSI drivers.

drivers/acorn/scsi/arxescsi.c

@@ -35,6 +35,7 @@
 #include <asm/irq.h>
 #include <asm/ecard.h>
 
+#include "../../scsi/scsi.h"
 #include "../../scsi/hosts.h"
 #include "arxescsi.h"
 #include "fas216.h"

drivers/acorn/scsi/cumana_2.c

@@ -35,6 +35,7 @@
 #include <asm/irq.h>
 #include <asm/pgtable.h>
 
+#include "../../scsi/scsi.h"
 #include "../../scsi/hosts.h"
 #include "fas216.h"
 #include "scsi.h"

drivers/acorn/scsi/eesox.c

@@ -41,6 +41,7 @@
 #include <asm/ecard.h>
 #include <asm/pgtable.h>
 
+#include "../../scsi/scsi.h"
 #include "../../scsi/hosts.h"
 #include "fas216.h"
 #include "scsi.h"

drivers/acorn/scsi/powertec.c

@@ -38,6 +38,7 @@
 #include <asm/irq.h>
 #include <asm/pgtable.h>
 
+#include "../../scsi/scsi.h"
 #include "../../scsi/hosts.h"
 #include "fas216.h"
 #include "scsi.h"