rocker: add tx/rx related tlv definitions

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
rocker: add u64 tvl put/get functions

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
rocker: fix rocker_tlv_get_u32 return value retype

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
rocker: introduce rocker_tlv_for_each_nested and rename rocker_tlv_for_each

Signed-off-by: Jiri Pirko <jiri@resnulli.us>