app/testpmd: fix RSS types display

app/testpmd: fix RSS types display

Now testpmd fails to display types when query RSS rule. The failure is
because the '\n' character is missing at the end of the function
'rss_config_display()'.
Actually, all places calling 'xxx_types_display()' need to '\n'. So this
patch moves '\n' to the inside of these function.

Bugzilla ID: 1048
Fixes: 534988c490f1 ("app/testpmd: unify RSS types display")
Fixes: 44a37f3cffe0 ("app/testpmd: compact RSS types output")
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Tested-by: Weiyuan Li <weiyuanx.li@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@xilinx.com>