mpi3mr: base driver code

This patch covers basic pci device driver requirements -
device probe, memory allocation, mapping system registers,
allocate irq lines etc.

Source is managed in mainly three different files.

mpi3mr_fw.c -	Keep common code which interact with underlying fw/hw.
mpi3mr_os.c -	Keep common code which interact with scsi midlayer.
mpi3mr_app.c -	Keep common code which interact with application/ioctl.
		This is currently work in progress.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Cc: sathya.prakash@broadcom.com

drivers/scsi/mpi3mr/Makefile

@@ -0,0 +1,4 @@
+# mpi3mr makefile
+obj-m += mpi3mr.o
+mpi3mr-y +=  mpi3mr_os.o     \
+		mpi3mr_fw.o \