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Patch series "hexagon: Fix up instances of -Wmissing-prototypes".

This series fixes all the instances of -Wmissing-prototypes in
arch/hexagon, as it is about to be enabled globally in a default build.


This patch (of 19):

Clang warns:

  arch/hexagon/mm/uaccess.c:39:15: warning: no previous prototype for function 'clear_user_hexagon' [-Wmissing-prototypes]
     39 | unsigned long clear_user_hexagon(void __user *dest, unsigned long count)
        |               ^
  arch/hexagon/mm/uaccess.c:39:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     39 | unsigned long clear_user_hexagon(void __user *dest, unsigned long count)
        | ^
        | static
  1 warning generated.

This function appears to have been unused since it was introduced in
commit 7567746e ("Hexagon: Add user access functions"), so remove it.

Link: https://lkml.kernel.org/r/20231130-hexagon-missing-prototypes-v1-0-5c34714afe9e@kernel.org
Link: https://lkml.kernel.org/r/20231130-hexagon-missing-prototypes-v1-1-5c34714afe9e@kernel.org

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brian Cain <bcain@quicinc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>