The following features are not supported on this
family of devices:
- Pins GPMC_CS[7:4]n are not pinned out
- Pins GPMC_A[27:23] are not pinned out
- Pins GPMC_AD[31:16] are not pinned out
- Pins GPMC_WAIT[3:2] are not pinned out
- Pins GPMC_BE[3:2]n are not pinned out