iwlwifi: a000: fix memory offsets and lengths

[ Upstream commit f4d1047914ea05e0f8393944da18f6ee5dad24c4 ]

Memory offsets and lengths for A000 HW is different
than currently specified.

Fixes: e34d975e ("iwlwifi: Add a000 HW family support")
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>