Add SST26VF064B QSPI flash, derived from AT25SF081-XMHD-X
This MR only adds the 64mbit variant
Related to !3109 (closed) but this is a derived symbol and complete re-done.
https://ww1.microchip.com/downloads/en/DeviceDoc/SST26VF064B-SST26VF064BA-2.5V-3.0V-64-Mbit-Serial-Quad-IO-Flash-Memory-Data-Sheet-DS20005119J.pdf