generic/765: Fix sysfs queue path for nvme partitions

generic/765: Fix sysfs queue path for nvme partitions

This tests checks atomic write limits reported by statx() are same as
the ones reported by sysfs, however nvme partitions don't have the
/sys/block/nvme0n1p1 style entry and also use the namespace's queue
limits for atomic writes. This causes the test to fail because it
expects /sys/block/nvme0n*p* to be present.

Hence, use the new _sysfs_queue_path() helper to get the correct
atomic write limits

Also, fix a small typo (s/awu_min/awu_max) when printing awu limits to
seqres.full

Reported-by: Disha Goel <disgoel@linux.ibm.com>
Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>