iw: add coalesce support

User can configure multiple coalesce rules using 'iw coalesce
enable <config-file>' command. The setting can be cleared using
'iw coalesce disable' command. 'iw coalesce show' displays current
configuration.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
3 files changed