[PATCH -next] m68k: mmu_context: Fix Sun-3 build

[Geert Uytterhoeven]

When building for Sun-3 (e.g. sun3_defconfig):

    In file included from ./arch/m68k/include/asm/mmu_context.h:312,
		     from arch/m68k/sun3/mmu_emu.c:28:
    ./include/asm-generic/mmu_context.h:46:20: error: redefinition of ‘destroy_context’
       46 | static inline void destroy_context(struct mm_struct *mm)
	  |                    ^~~~~~~~~~~~~~~
    In file included from arch/m68k/sun3/mmu_emu.c:28:
    ./arch/m68k/include/asm/mmu_context.h:192:20: note: previous definition of ‘destroy_context’ was here
      192 | static inline void destroy_context(struct mm_struct *mm)
	  |                    ^~~~~~~~~~~~~~~

Fix this by marking destroy_context implemented by arch-specific code.

Reported-by: noreply@xxxxxxxxxxxxxx
Fixes: cb41155766b05935 ("m68k: use asm-generic/mmu_context.h for no-op implementations")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
 arch/m68k/include/asm/mmu_context.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/m68k/include/asm/mmu_context.h b/arch/m68k/include/asm/mmu_context.h
index d12d8a9032f67bdd..a5d358855878490f 100644
--- a/arch/m68k/include/asm/mmu_context.h
+++ b/arch/m68k/include/asm/mmu_context.h
@@ -189,6 +189,7 @@ static inline void get_mmu_context(struct mm_struct *mm)
 }
 
 /* flush context if allocated... */
+#define destroy_context destroy_context
 static inline void destroy_context(struct mm_struct *mm)
 {
 	if (mm->context != SUN3_INVALID_CONTEXT)
-- 
2.25.1