s390/vdso: misc simple code changes

- remove unneeded includes
- move functions around
- remove obvious and/or incorrect comments
- shorten some if conditions

No functional change.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-01-24 20:57:08 +01:00 • committed by Vasily Gorbik
commit 8d4be7f318