intel_idle: remove definition of DEBUG

mainline inclusion
from mainline-v5.12-rc2
commit 651bc581
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I5BECY


CVE: NA

Intel-SIG: commit 651bc581 intel_idle: remove definition
of DEBUG.
Backport intel_idle driver

--------------------------------

Defining DEBUG should only be done in development.
So remove DEBUG.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: yingbao jia <yingbao.jia@intel.com>
Signed-off-by: Jun Tian <jun.j.tian@intel.com>