cpupower: Add cpuid cap flag for MSR_AMD_HWCR support

mainline inclusion
from mainline-5.12-rc1-dontuse
commit 3a3ecfdb
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4QQWF



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Remove the family check for accessing the MSR_AMD_HWCR MSR and replace
it with a cpupower cap flag.

This update also allows for the removal of the local cpupower_cpu_info
variable in cpufreq_has_boost_support() since we no longer need it to
check the family.

Signed-off-by: Nathan Fontenot <nathan.fontenot@amd.com>
Reviewed-by: Robert Richter <rrichter@amd.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: qinyu <qinyu16@huawei.com>
Reviewed-by: Chao Liu <liuchao173@huawei.com>
Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>