pds_core: fix memory leak in pdsc_debugfs_add_qcq()

pds_core: fix memory leak in pdsc_debugfs_add_qcq()

The memory allocated for intr_ctrl_regset, which is passed to
debugfs_create_regset32() may not be cleaned up when the driver is
removed. Fix that by using device managed allocation for it.

Fixes: 45d76f492938 ("pds_core: set up device and adminq")
Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Link: https://patch.msgid.link/20250409054450.48606-1-abdun.nihaal@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>