ath10k: Indicate MSDU_ID_NEW_PARTITION support in host cap flags

The HL1.0 firmware uses msdu desc_id above 3000 as a reference
to indicate tx completion on a different endpoint. Due to this, if the
host driver uses more than 3000 msdu desc_id, the tx completion
for the msdu with desc_id above 3000 is sent to a different endpoint.

Setting the MSDU_ID_NEW_PARTITION host driver capability support
in the wmi ready flags indicates to the HL1.0 firmware to change
this threshold reference to a higher value.

Change-Id: If7bbddb6827bbe2be995c153328611930319d74e
Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>