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 <[e-mail]>
Cc: Steven J. Hill <[e-mail]>
Cc: [e-mail]
Cc: Fuxin Zhang <[e-mail]>
Cc: Zhangjin Wu <[e-mail]>
Patchwork: https://patchwork.linux-mips.org/patch/9616/
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/power/Makefile

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

arch/mips/power/hibernate.S arch/mips/power/hibernate_asm.S

···
 	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 */
···
 	PTR_L s7, PT_R23(t0)
 	PTR_LI v0, 0x0
 	jr ra
-END(swsusp_arch_resume)
+END(restore_image)

arch/mips/power/hibernate.c

···
+#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();
+}