sparc64: Add missing hardware capabilities for M7

sparc64: Add missing hardware capabilities for M7

Some M7 hardware capabilities were not being reported
correctly. This commit fixes the issue by adding definitions
for all the missing capabilities from both the Machine
Descriptor and the Compatibility Feature Register.

Orabug: 25555746

Signed-off-by: Dave Aldridge <david.j.aldridge@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com>
Signed-off-by: Allen Pais <allen.pais@oracle.com>