bnxt_en: Refactor hardware resource data structures.

bnxt_en: Refactor hardware resource data structures.

Orabug: 27648355, 27648339

In preparation for new firmware APIs to allocate hardware resources,
add a new struct bnxt_hw_resc to hold various min, max and reserved
resources.  This new structure is common for PFs and VFs.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 6a4f29470569c5a158c1871a2f752ca22e433420)
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Reviewed-by: Jack Vogel <jack.vogel@oracle.com>