scripts/tags.sh: tag SYM_*START*() assembler symbols

The `startup_64` symbol and many other assembler symbols are not tagged.

Add a generic rule to tag assembler symbols defined with macros like
SYM_*START*(symbol).

Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Link: https://lore.kernel.org/r/20250131155439.2025038-1-costa.shul@redhat.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>