0 UARTs can
construct their own IRQ handler with these shared components,
while working around their own unique errata issues.

The function names are given a serial8250 prefix, since they
are now entering the global namespace.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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