Fix vendor attribute numbering and relocate attribute accordingly
The attributes QCA_WLAN_VENDOR_ATTR_LL_STATS_PAD and
QCA_WLAN_VENDOR_ATTR_LL_STATS_IFACE_NF_CAL_VAL were allocated the same
attribute number in error. QCA_WLAN_VENDOR_ATTR_LL_STATS_PAD attribute
is known to not be used; thus, it is safe to be renumbered.