[qca-nss-drv] 64 bits support

1. Set message/data buffer opaque size based on 32/64 bits platform
2. Support NET_SKBUFF_DATA_USES_OFFSET
3. Use __iomem type for system io address

Change-Id: Idc2278a2174513658046303a8e9b72d868ac97b2
Signed-off-by: Stephen Wang <wstephen@codeaurora.org>
43 files changed