x86: psr: support co-exist features' values setting

x86: psr: support co-exist features' values setting

The whole value array is transferred into 'do_write_psr_msrs'. Then, we can
write all features values on the cos id into MSRs.

Because multiple features may co-exist, we need handle all features to write
values of them into a COS register with new COS ID. E.g:
1. L3 CAT and L2 CAT co-exist.
2. Dom1 and Dom2 share the same COS ID (2). The L3 CAT CBM of Dom1 is 0x1ff,
   the L2 CAT CBM of Dom1 is 0x1f.
3. User wants to change L2 CBM of Dom1 to be 0xf. Because COS ID 2 is
   used by Dom2 too, we have to pick a new COS ID 3. The values of Dom1 on
   COS ID 3 are all default values as below:
           ---------
           | COS 3 |
           ---------
   L3 CAT  | 0x7ff |
           ---------
   L2 CAT  | 0xff  |
           ---------
4. After setting, the L3 CAT CBM value of Dom1 should be kept and the new L2
   CAT CBM is set. So, the values on COS ID 3 should be below.
           ---------
           | COS 3 |
           ---------
   L3 CAT  | 0x1ff |
           ---------
   L2 CAT  | 0xf   |
           ---------

Note that the original -ENOSPC return, which is being transformed into
an ASSERT(), could have been an ASSERT() from the beginning.

Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>