venice: Simplify conditions for network init

The conditions in this code do not align when doing an SPL build with
split config. Use __maybe_unused to avoid needing to be so explicit.

Of course a better solution would be to refactor all of this to avoid
using #ifdef.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/gateworks/venice/venice.c b/board/gateworks/venice/venice.c
index c4d86c2..e6fa7eb 100644
--- a/board/gateworks/venice/venice.c
+++ b/board/gateworks/venice/venice.c
@@ -41,8 +41,7 @@
 	return -1;
 }
 
-#if (IS_ENABLED(CONFIG_NET))
-static int setup_fec(void)
+static int __maybe_unused setup_fec(void)
 {
 	struct iomuxc_gpr_base_regs *gpr =
 		(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
@@ -58,7 +57,7 @@
 	return 0;
 }
 
-static int setup_eqos(void)
+static int __maybe_unused setup_eqos(void)
 {
 	struct iomuxc_gpr_base_regs *gpr =
 		(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
@@ -71,6 +70,7 @@
 	return set_clk_eqos(ENET_125MHZ);
 }
 
+#if (IS_ENABLED(CONFIG_NET))
 int board_phy_config(struct phy_device *phydev)
 {
 	unsigned short val;