This allows to `make arch/riscv/riscv64/head.o`.

Example of rune on a fresh copy of the repository:
    make XEN_TARGET_ARCH=riscv64 CROSS_COMPILE=riscv64-linux-gnu- KBUILD_DEFCONFIG=tiny64_defconfig arch/riscv/riscv64/head.o

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Bob Eshleman <bobbyeshleman@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: Connor Davis <connojdavis@gmail.com>
---
 xen/arch/riscv/riscv64/Makefile | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 xen/arch/riscv/riscv64/Makefile

diff --git a/xen/arch/riscv/riscv64/Makefile b/xen/arch/riscv/riscv64/Makefile
new file mode 100644
index 000000000000..15a4a65f6615
--- /dev/null
+++ b/xen/arch/riscv/riscv64/Makefile
@@ -0,0 +1 @@
+extra-y += head.o
-- 
Anthony PERARD