comedi: Move "comedi_isadma.h" to <linux/comedi/comedi_isadma.h>

Some of the header files in "drivers/comedi/drivers/" are common enough
to be useful to out-of-tree comedi driver modules. Using them for
out-of-tree module builds is hampered by the headers being outside the
"include/" directory so it is desirable to move them.

There are about a half a dozen or so Comedi device drivers that use the
"comedi_isadma" module to add ISA DMA support. The macros and
declarations to use that module are in the "comedi_isadma.h" header file
in the comedi "drivers" directory. Move it into
"include/linux/comedi/".

Signed-off-by: Ian Abbott <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/comedi/drivers/comedi_isadma.c

···
 #include <linux/dma-mapping.h>
 #include <asm/dma.h>
 #include <linux/comedi/comedidev.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 /**
  * comedi_isadma_program - program and enable an ISA DMA transfer

drivers/comedi/drivers/das16.c

···
 #include <linux/comedi/comedidev.h>
 #include <linux/comedi/comedi_8255.h>
 #include <linux/comedi/comedi_8254.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 #define DAS16_DMA_SIZE 0xff00	/*  size in bytes of allocated dma buffer */
 

drivers/comedi/drivers/das1800.c

···
 #include <linux/io.h>
 #include <linux/comedi/comedidev.h>
 #include <linux/comedi/comedi_8254.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 /* misc. defines */
 #define DAS1800_SIZE           16	/* uses 16 io addresses */

drivers/comedi/drivers/dt282x.c

···
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/comedi/comedidev.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 /*
  * Register map

drivers/comedi/drivers/ni_at_a2150.c

···
 #include <linux/io.h>
 #include <linux/comedi/comedidev.h>
 #include <linux/comedi/comedi_8254.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 #define A2150_DMA_BUFFER_SIZE	0xff00	/*  size in bytes of dma buffer */
 

drivers/comedi/drivers/ni_labpc_isadma.c

···
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/comedi/comedidev.h>
+#include <linux/comedi/comedi_isadma.h>
 
-#include "comedi_isadma.h"
 #include "ni_labpc.h"
 #include "ni_labpc_regs.h"
 #include "ni_labpc_isadma.h"

drivers/comedi/drivers/pcl812.c

···
 #include <linux/io.h>
 #include <linux/comedi/comedidev.h>
 #include <linux/comedi/comedi_8254.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 /*
  * Register I/O map

drivers/comedi/drivers/pcl816.c

···
 #include <linux/interrupt.h>
 #include <linux/comedi/comedidev.h>
 #include <linux/comedi/comedi_8254.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 /*
  * Register I/O map

drivers/comedi/drivers/pcl818.c

···
 #include <linux/interrupt.h>
 #include <linux/comedi/comedidev.h>
 #include <linux/comedi/comedi_8254.h>
-
-#include "comedi_isadma.h"
+#include <linux/comedi/comedi_isadma.h>
 
 /*
  * Register I/O map