unicore32: Use Kbuild infrastructure for kvm_para.h

All the headers but kvm_para.h use the Kbuild infrastructure to
get to the asm-generic headers.

Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>

arch/unicore32/include/uapi/asm/Kbuild

@@ -6,3 +6,5 @@ header-y += kvm_para.h
 header-y += ptrace.h
 header-y += sigcontext.h
 header-y += unistd.h
+
+generic-y += kvm_para.h

arch/unicore32/include/uapi/asm/kvm_para.h

-#include <asm-generic/kvm_para.h>