xtensa: tlb: include <asm/tlb.h> for missing prototype

Add the prototype for check_tlb_sanity() to <asm/tlb.h> and use that
header to prevent a build warning:

arch/xtensa/mm/tlb.c:273:6: warning: no previous prototype for 'check_tlb_sanity' [-Wmissing-prototypes]
273 | void check_tlb_sanity(void)

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Chris Zankel <[e-mail]>
Cc: Max Filippov <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Max Filippov <[e-mail]>

arch/xtensa/include/asm/tlb.h

···
 
 #define __pte_free_tlb(tlb, pte, address)	pte_free((tlb)->mm, pte)
 
+void check_tlb_sanity(void);
+
 #endif	/* _XTENSA_TLB_H */

arch/xtensa/mm/tlb.c

···
 #include <linux/mm.h>
 #include <asm/processor.h>
 #include <asm/mmu_context.h>
+#include <asm/tlb.h>
 #include <asm/tlbflush.h>
 #include <asm/cacheflush.h>