platform/x86: intel-uncore-freq: Conditionally create attribute for read frequency

mainline inclusion
from mainline-v6.6-rc7
commit 4d73c677
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I8WOEG

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d73c6772ab771cbbe7e46a73e7c78ba490350fa



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

When the current uncore frequency can't be read, don't create attribute
"current_freq_khz" as any read will fail later. Some user space
applications like turbostat fail to continue with the failure. So, check
error during attribute creation.

Intel-SIG: commit 4d73c677 platform/x86: intel-uncore-freq: Conditionally create attribute for read frequency.
Backport Intel-uncore-freq driver support on TPMI.

Fixes: 414eef27 ("platform/x86/intel/uncore-freq: Display uncore current frequency")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231004181915.1887913-1-srinivas.pandruvada@linux.intel.com


Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[ Yingbao Jia: amend commit log ]
Signed-off-by: Yingbao Jia <yingbao.jia@intel.com>