drivers: hv: Fix EXPORT_SYMBOL and tab spaces issue

1.Fixed EXPORT_SYMBOL should be follow immediately function/variable.
2.Fixed code tab spaces issue.

Signed-off-by: Vasanth M <vasanth3g@gmail.com>
Link: https://lore.kernel.org/r/20210310052155.39460-1-vasanth3g@gmail.com


Signed-off-by: Wei Liu <wei.liu@kernel.org>