x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl

maillist inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git/log/?h=mpam/snapshot/v6.7-rc2



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Once the filsystem parts of resctrl move to fs/resctrl, it cannot rely
on definitions in x86's internal.h.

Move definitions in internal.h that need to be shared between the filesystem
and architecture code to header files that fs/resctrl can include.

Doing this separately means the filesystem code only moves between files
of the same name, instead of having these changes mixed in too.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Zeng Heng <zengheng4@huawei.com>