lmb: bootm: remove superfluous lmb stub functions

Remove a couple of superfluous LMB stub functions, and instead put a
check for calling the lmb_reserve() function.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/boot/bootm.c b/boot/bootm.c
index ddede08..a61bbcf 100644
--- a/boot/bootm.c
+++ b/boot/bootm.c
@@ -239,11 +239,6 @@
 	return 0;
 }
 
-#if !CONFIG_IS_ENABLED(LMB)
-#define lmb_reserve(base, size)
-static inline void boot_start_lmb(void) { }
-#endif
-
 static int bootm_start(void)
 {
 	memset((void *)&images, 0, sizeof(images));
@@ -700,7 +695,9 @@
 		images->os.end = relocated_addr + image_size;
 	}
 
-	lmb_reserve(images->os.load, (load_end - images->os.load));
+	if (CONFIG_IS_ENABLED(LMB))
+		lmb_reserve(images->os.load, (load_end - images->os.load));
+
 	return 0;
 }