ARM: omap1: avoid symbol clashes in fiq handler

ARM: omap1: avoid symbol clashes in fiq handler

The ams-delta-fiq-handler.S file has a number of symbols with fairly
generic names, including one named 'exit' that causes a compiler warning
in some configuration options:

vmlinux.o: error: exit() function name creates ambiguity with -ffunction-sections

Change all these symbols to use a .L prefix to make them local to
the fiq handler.

Reviewed-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Link: https://lore.kernel.org/r/20251204095355.1032786-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>