kasan: integrate the common part of two KASAN tag-based modes

1. Move kasan_get_free_track() and kasan_set_free_info() into tags.c
   and combine these two functions for SW_TAGS and HW_TAGS kasan mode.

2. Move kasan_get_bug_type() to report_tags.c and make this function
   compatible for SW_TAGS and HW_TAGS kasan mode.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kuan-Ying Lee <[email protected]>
Suggested-by: Marco Elver <[email protected]>
Suggested-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Andrey Konovalov <[email protected]>
Reviewed-by: Marco Elver <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Chinwen Chang <[email protected]>
Cc: Matthias Brugger <[email protected]>
Cc: Nicholas Tang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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