MIPS: Hibernate: Restructure files and functions

This patch has no functional changes, it just to keep the assembler
code to a minimum. Files and functions naming is borrowed from X86.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/9616/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/power/Makefile

@@ -1 +1 @@
-obj-$(CONFIG_HIBERNATION) += cpu.o hibernate.o
+obj-$(CONFIG_HIBERNATION) += cpu.o hibernate.o hibernate_asm.o

arch/mips/power/hibernate.c

@@ -0,0 +1,10 @@
+#include <asm/tlbflush.h>
+
+extern int restore_image(void);
+
+int swsusp_arch_resume(void)
+{
+	/* Avoid TLB mismatch during and after kernel resume */
+	local_flush_tlb_all();
+	return restore_image();
+}

arch/mips/power/hibernate_asm.S

@@ -29,9 +29,7 @@ LEAF(swsusp_arch_suspend)
 	j swsusp_save
 END(swsusp_arch_suspend)
 
-LEAF(swsusp_arch_resume)
-	/* Avoid TLB mismatch during and after kernel resume */
-	jal local_flush_tlb_all
+LEAF(restore_image)
 	PTR_L t0, restore_pblist
 0:
 	PTR_L t1, PBE_ADDRESS(t0)   /* source */
@@ -60,4 +58,4 @@ LEAF(swsusp_arch_resume)
 	PTR_L s7, PT_R23(t0)
 	PTR_LI v0, 0x0
 	jr ra
-END(swsusp_arch_resume)
+END(restore_image)