fpga: xilinx: Avoid CamelCase for in Xilinx_desc

No functional changes.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/esd/pmc440/fpga.c b/board/esd/pmc440/fpga.c
index 18a1b63..f876da8 100644
--- a/board/esd/pmc440/fpga.c
+++ b/board/esd/pmc440/fpga.c
@@ -57,7 +57,7 @@
 	ngcc_fpga_post_config_fn
 };
 
-Xilinx_desc fpga[CONFIG_FPGA_COUNT] = {
+xilinx_desc fpga[CONFIG_FPGA_COUNT] = {
 	XILINX_XC3S1200E_DESC(
 #ifdef USE_SP_CODE
 		slave_parallel,