In PPDU Rx stats GI value for HE displaying wrong, because of wrong enum values. Corrected enum values to match GI values to Tx stats. Also LDPC shows always 0 in PPDU Rx stats for HE. Populated LDPC value for HE case as well to display in PPDU Rx stats. Change-Id: I6054d3e8c8e8672bcc2d43daa8a6e2a1bc859985