hfi: bases for user_exp_rcv

This implements a skeleton setup function and call it on ioctl

Many missing points:
 - missing pci mapping to make setup work
 - no clear (passed to linux, so will likely bug out)
 - missing locks/safe-guards

Conflicts:
	kernel/Makefile.build.in

kernel/Makefile.build.in

@@ -8,7 +8,7 @@ OBJS += process.o copy.o waitq.o futex.o timer.o plist.o fileobj.o shmobj.o
 OBJS += zeroobj.o procfs.o devobj.o sysfs.o xpmem.o profile.o freeze.o
 OBJS += rbtree.o
 OBJS += pager.o
-OBJS += file_ops.o user_sdma.o sdma.o
+OBJS += file_ops.o user_sdma.o sdma.o user_exp_rcv.o chip.o
 # POSTK_DEBUG_ARCH_DEP_18 coredump arch separation.
 DEPSRCS=$(wildcard $(SRC)/*.c)