Hotfix to remove an unwanted TX power reduction when using multiple TX antenna ports.

This hotfix removes division by num_antenna_ports in PDSCH precoding matrix generation. These matrices are defined for CSI reporting in this way but here we are using them for transmission and this results in an unwanted 10*log10(num_antenna_ports) reduction in transmit power (3dB for 2 antenna ports, 6dB for 4 antenna ports, etc.)