image: Remove ifdefs around image_setup_linux() el at

Drop some more ifdefs in image-board.c and also the FPGA part of bootm.c
which calls into it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/bootm.c b/common/bootm.c
index ea71522..fe17d1d 100644
--- a/common/bootm.c
+++ b/common/bootm.c
@@ -296,15 +296,15 @@
 #endif
 
 #if IMAGE_ENABLE_FIT
-#if defined(CONFIG_FPGA)
-	/* find bitstreams */
-	ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
-			    NULL, NULL);
-	if (ret) {
-		printf("FPGA image is corrupted or invalid\n");
-		return 1;
+	if (IS_ENABLED(CONFIG_FPGA)) {
+		/* find bitstreams */
+		ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
+				    NULL, NULL);
+		if (ret) {
+			printf("FPGA image is corrupted or invalid\n");
+			return 1;
+		}
 	}
-#endif
 
 	/* find all of the loadables */
 	ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
diff --git a/common/image-board.c b/common/image-board.c
index 898f0a2..1d6842f 100644
--- a/common/image-board.c
+++ b/common/image-board.c
@@ -814,7 +814,6 @@
 }
 #endif
 
-#ifdef CONFIG_SYS_BOOT_GET_CMDLINE
 /**
  * boot_get_cmdline - allocate and initialize kernel cmdline
  * @lmb: pointer to lmb handle, will be used for memory mgmt
@@ -853,9 +852,7 @@
 
 	return 0;
 }
-#endif /* CONFIG_SYS_BOOT_GET_CMDLINE */
 
-#ifdef CONFIG_SYS_BOOT_GET_KBD
 /**
  * boot_get_kbd - allocate and initialize kernel copy of board info
  * @lmb: pointer to lmb handle, will be used for memory mgmt
@@ -883,15 +880,14 @@
 
 	debug("## kernel board info at 0x%08lx\n", (ulong)*kbd);
 
-#if defined(DEBUG) && defined(CONFIG_CMD_BDI)
-	do_bdinfo(NULL, 0, 0, NULL);
+#if defined(DEBUG)
+	if (IS_ENABLED(CONFIG_CMD_BDI)
+		do_bdinfo(NULL, 0, 0, NULL);
 #endif
 
 	return 0;
 }
-#endif /* CONFIG_SYS_BOOT_GET_KBD */
 
-#ifdef CONFIG_LMB
 int image_setup_linux(bootm_headers_t *images)
 {
 	ulong of_size = images->ft_len;
@@ -925,7 +921,6 @@
 
 	return 0;
 }
-#endif /* CONFIG_LMB */
 
 void genimg_print_size(uint32_t size)
 {