In subsequent patches we'll need to fill in extable data fields in
regular assembly files. In preparation for this, move the definitions of
the extable data fields earlier in asm-extable.h so that they are
defined for both assembly and C files.

There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Tong Tiangen <tongtiangen@huawei.com>
Link: https://lore.kernel.org/r/20220621072638.1273594-3-tongtiangen@huawei.comSigned-off-by: Will Deacon <will@kernel.org>