[PATCH 2/2] net/mana: add 32 bit short doorbell

[Long Li]

> Subject: [PATCH 2/2] net/mana: add 32 bit short doorbell
> 
> Add 32 bit short doorbell support. Ring short doorbell when running in 32 bit
> applicactions.
> 
> Both 32 bit and 64 bit doorbells are supported by mana hardware on same
> platform. 32 bit applications cannot use 64 bit doorbells.
> 64 bit applications can use 32 bit doorbells, however the performance would
> greatly suffer and it is not recommended.
> 
> Cc: stable at dpdk.org
> 
> Signed-off-by: Wei Hu <weh at microsoft.com>

Acked-by: Long Li <longli at microsoft.com>