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>
diff --git a/configs/x600_defconfig b/configs/x600_defconfig
index 4658f97..18720da 100644
--- a/configs/x600_defconfig
+++ b/configs/x600_defconfig
@@ -37,6 +37,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=nand:64M(ubi0),64M(ubi1)"
 CONFIG_CMD_UBI=y
 CONFIG_ENV_IS_IN_FLASH=y
+CONFIG_FPGA_XILINX=y
 CONFIG_SYS_I2C_DW=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y