staging: csr: csr_wifi_hip_unifi_signal_names: fix whitespaced paddings

Fixed whitespace paddings in the csr_wifi_hip_unifi_signal_names.c file
that were, though, not identified by checkpatch.pl tool.

Signed-off-by: Hojung Youn <amoc.yn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>