[PATCH v3 7/7] doc: add some extended features in procinfo guide

[Pattan, Reshma]

> -----Original Message-----
> From: Dongdong Liu <liudongdong3 at huawei.com>
> Signed-off-by: Dongdong Liu <liudongdong3 at huawei.com>

Acked-by: Reshma Pattan <reshma.pattan at intel.com>