RISC-V: KVM: Order the object files alphabetically

Order the object files alphabetically in the Makefile so that
it is very predictable inserting new object files in the future.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20241020194734.58686-2-apatel@ventanamicro.com


Signed-off-by: Anup Patel <anup@brainfault.org>