common: binman: Calling initr_binman() when BINMAN_FDT

Calling empty function when BINMAN_FDT is adding +64B for nothing which is
not helping on size sensitive configurations as Xilinx mini configurations.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/f79dc1fbf796dd5ad290f6080608ee68d7652cfc.1730452668.git.michal.simek@amd.com
diff --git a/common/board_r.c b/common/board_r.c
index 62228a7..ff9bce8 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -287,13 +287,10 @@
 	return 0;
 }
 
-static int initr_binman(void)
+static int __maybe_unused initr_binman(void)
 {
 	int ret;
 
-	if (!CONFIG_IS_ENABLED(BINMAN_FDT))
-		return 0;
-
 	ret = binman_init();
 	if (ret)
 		printf("binman_init failed:%d\n", ret);
@@ -635,7 +632,9 @@
 #ifdef CONFIG_EFI_LOADER
 	efi_memory_init,
 #endif
+#ifdef CONFIG_BINMAN_FDT
 	initr_binman,
+#endif
 #ifdef CONFIG_FSP_VERSION2
 	arch_fsp_init_r,
 #endif