[PATCH 9/9] riscv: process: Fix no prototype for arch_dup_task_struct

[Nanyong Sun]

Fix the following W=1 compilation warning:
arch/riscv/kernel/process.c:114:5: warning: no previous prototype for 
‘arch_dup_task_struct’ [-Wmissing-prototypes]
  114 | int arch_dup_task_struct(struct task_struct *dst, struct task_struct 
*src)
      |     ^~~~~~~~~~~~~~~~~~~~

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Nanyong Sun <sunnany...@huawei.com>
---
 arch/riscv/include/asm/processor.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/include/asm/processor.h 
b/arch/riscv/include/asm/processor.h
index 3a240037bde2..021ed64ee608 100644
--- a/arch/riscv/include/asm/processor.h
+++ b/arch/riscv/include/asm/processor.h
@@ -71,6 +71,7 @@ int riscv_of_processor_hartid(struct device_node *node);
 int riscv_of_parent_hartid(struct device_node *node);
 
 extern void riscv_fill_hwcap(void);
+extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct 
*src);
 
 #endif /* __ASSEMBLY__ */
 
-- 
2.25.1