Correct SPL uses of CMD_NVME

This converts 3 usages of this option to the non-SPL form, since there is
no SPL_CMD_NVME defined in Kconfig

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/apple.h b/include/configs/apple.h
index fe7d11b..ee6e116 100644
--- a/include/configs/apple.h
+++ b/include/configs/apple.h
@@ -9,7 +9,7 @@
 	"stdout=serial,vidconsole\0" \
 	"stderr=serial,vidconsole\0"
 
-#if CONFIG_IS_ENABLED(CMD_NVME)
+#if IS_ENABLED(CONFIG_CMD_NVME)
 	#define BOOT_TARGET_NVME(func) func(NVME, nvme, 0)
 #else
 	#define BOOT_TARGET_NVME(func)