microblaze: generate uapi header and system call table files

System call table generation script must be run to gener-
ate unistd_32.h and syscall_table.h files. This patch will
have changes which will invokes the script.

This patch will generate unistd_32.h and syscall_table.h
files by the syscall table generation script invoked by
microblaze/Makefile and the generated files against the
removed files must be identical.

The generated uapi header file will be included in uapi/-
asm/unistd.h and generated system call table header file
will be included by kernel/syscall_table.S file.
Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/microblaze/Makefile

@@ -79,6 +79,9 @@ all: linux.bin
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
 
+archheaders:
+	$(Q)$(MAKE) $(build)=arch/microblaze/kernel/syscalls all
+
 linux.bin linux.bin.gz linux.bin.ub: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 

arch/microblaze/include/asm/Kbuild

+generated-y += syscall_table.h
 generic-y += barrier.h
 generic-y += bitops.h
 generic-y += bug.h

arch/microblaze/include/uapi/asm/Kbuild

 # UAPI Header export list
 include include/uapi/asm-generic/Kbuild.asm
 
+generated-y += unistd_32.h
 generic-y += bitsperlong.h
 generic-y += bpf_perf_event.h
 generic-y += errno.h