x86/platform/uv/BAU: Minor cleanup, make some local functions static

The functions handle_uv2_busy, uv_flush_send_and_wait and
find_another_by_swack are local to the source, so make them static.

Also remove normal_busy as it is no longer used.

Fixes various smatch warnings, such as:
"symbol 'find_another_by_swack' was not declared. Should it be static?"
"symbol 'handle_uv2_busy' was not declared. Should it be static?"

Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Mike Travis <[email protected]>
Cc: Andrew Banman <[email protected]>
Cc: [email protected]
Cc: Dimitri Sivanich <[email protected]>
Cc: Dou Liyang <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]

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