riscv: hibernation: Replace jalr with jr before suspend_restore_regs

No need to link the x1/ra reg via jalr before suspend_restore_regs
So it's better to replace jalr with jr.
Signed-off-by: Song Shuai <suagrfillet@gmail.com>
Reviewed-by: JeeHeng Sia <jeeheng.sia@starfivetech.com >
Link: https://lore.kernel.org/r/20230519060854.214138-1-suagrfillet@gmail.comSigned-off-by: Palmer Dabbelt <palmer@rivosinc.com>

arch/riscv/kernel/hibernate-asm.S

@@ -50,7 +50,7 @@ ENTRY(hibernate_restore_image)
 	REG_L	s4, restore_pblist
 	REG_L	a1, relocated_restore_code
 
-	jalr	a1
+	jr	a1
 END(hibernate_restore_image)
 
 /*
@@ -73,5 +73,5 @@ ENTRY(hibernate_core_restore_code)
 	REG_L	s4, HIBERN_PBE_NEXT(s4)
 	bnez	s4, .Lcopy
 
-	jalr	s2
+	jr	s2
 END(hibernate_core_restore_code)