pcm-iio.x: Enable IIO_MCP stack and minor bug fix
pcm-iio.x: Enable IIO_MCP stack and minor bug fix

discover_pci_tree() will find some non-existing functions
when scanning on non-existing sockets. Change it so it only scan
m->getNumSockets()

opcm/pcm,opcm/pcm,opcm/pcm,opcm/pcm