Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Patch from Vincent Sanders

When building the ARM platforms several serial drivers fail to compile
with GCC 4.01 due to extern/static ambiguity.
Signed-off-by: NVincent Sanders <vince@arm.linux.org.uk>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Add uart_insert_char(), which handles inserting characters into the
flip buffer.  This helper function handles the correct semantics
for handling overrun in addition to inserting normal characters.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

With unlikely() there's no need for the error path to
use gotos.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

Ensure ARM serial driver error paths are marked with the
unlikely() compiler hint.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!