SAM E54 Xplained Pro: add support for SST26VF064B flash chip

Author: tomiahola

ports/atmel-samd/boards/same54_xplained/mpconfigboard.mk

@@ -7,7 +7,7 @@ CHIP_VARIANT = SAME54P20A
 CHIP_FAMILY = same54
 
 QSPI_FLASH_FILESYSTEM = 1
-EXTERNAL_FLASH_DEVICES = "N25Q256A"
+EXTERNAL_FLASH_DEVICES = "N25Q256A", "SST26VF064B"
 LONGINT_IMPL = MPZ
 
 CIRCUITPY_SDIOIO = 1