configs: sama5d2: add qspi config for QSPI1

Add new config for storing environment from QSPI1.

Signed-off-by: Mihai Sain <mihai.sain@microchip.com>
[eugen.hristev@microchip.com: cleanup and add MAINTAINERS entry]
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
2 files changed