fpga: Kconfig: Replace spaces with tabs

Trivial Kconfig cleanup. Use tabs instead of spaces.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

drivers/fpga/Kconfig

@@ -46,15 +46,15 @@ config FPGA_ZYNQMPPL
 	  on Xilinx Zynq UltraScale+ (ZynqMP) device.
 
 config FPGA_SPARTAN3
-       bool "Enable Spartan3 FPGA driver"
-       help
-         Enable Spartan3 FPGA driver for loading in BIT format.
+	bool "Enable Spartan3 FPGA driver"
+	help
+	  Enable Spartan3 FPGA driver for loading in BIT format.
 
 config FPGA_ZYNQPL
-       bool "Enable Xilinx FPGA for Zynq"
-       depends on ARCH_ZYNQ
-       help
-         Enable FPGA driver for loading bitstream in BIT and BIN format
-         on Xilinx Zynq devices.
+	bool "Enable Xilinx FPGA for Zynq"
+	depends on ARCH_ZYNQ
+	help
+	  Enable FPGA driver for loading bitstream in BIT and BIN format
+	  on Xilinx Zynq devices.
 
 endmenu