fpga: Resync various CONFIG_FPGA_* symbols

These are declared in Kconfig, but some #defines have crept in.

CONFIG_FPGA
CONFIG_FPGA_ALTERA
CONFIG_FPGA_CYCLON2
CONFIG_FPGA_SOCFPGA
CONFIG_FPGA_XILINX
CONFIG_FPGA_ZYNQMPPL

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
9 files changed