ACPI/APEI: Update einj documentation for param1/param2
ACPI/APEI: Update einj documentation for param1/param2

To ensure EINJ working well when injecting errors via EINJ
table, add some restrictions: param1 must be a valid physical
RAM address and param2 must specify page granularity or
narrower.

Signed-off-by: Chen Gong <1b6cd78b57df009d087b682fa5d09a04e6a050ac@linux.intel.com>
Signed-off-by: Tony Luck <e7984595ec0368ff920a7b3521dc7093683f6f26@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs