fpga: Make do_fpga_loads() static

do_fpga_loads() is not called from anywhere else that's why make it static.

Reviewed-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/cbe93e4eb33752aaddc943b15fd04731d4f75b68.1738574893.git.michal.simek@amd.com

cmd/fpga.c

@@ -67,7 +67,8 @@ static int do_fpga_check_params(long *dev, long *fpga_data, size_t *data_size,
 }
 
 #if defined(CONFIG_CMD_FPGA_LOAD_SECURE)
-int do_fpga_loads(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+static int do_fpga_loads(struct cmd_tbl *cmdtp, int flag, int argc,
+			 char *const argv[])
 {
 	size_t data_size = 0;
 	long fpga_data, dev;