By Ellen Chang Shares of this key memory chip maker may have longer to run, Real Money Columnist Stephen ‘Sarge’ Guilfoyle argues. Persistent supply chain problems and shortages in memory chips are likely to continue, according to Real Money Columnist Stephen ‘Sarge’ Guilfoyle. That suggests shares of one of the biggest makers of the chips could be set for gains, according to Guilfoyle. Unlike central processor or graphics chips, memory chips tend to be seen more as a commodity, and trade accordingly under normal circumstances. Micron Technology (MU) – Get Micron Technology, Inc. Report recent…