nocturne: enable legacy and alt firmwares.

BUG=chromium:1013032
TEST='./build_packages --board=nocturne', flash to device and enter altfw

Change-Id: I96f8cc33efff90e72a04a81436a6349b6610160d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/board-overlays/+/2069182
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Brett Profitt <brett.profitt@gmail.com>
Commit-Queue: Peter Marheine <pmarheine@chromium.org>
diff --git a/overlay-nocturne/profiles/base/make.defaults b/overlay-nocturne/profiles/base/make.defaults
index d6ad7e5..00b5968 100644
--- a/overlay-nocturne/profiles/base/make.defaults
+++ b/overlay-nocturne/profiles/base/make.defaults
@@ -31,3 +31,7 @@
 
 # Allow the option to use QCA Wifi and BT
 LINUX_FIRMWARE="${LINUX_FIRMWARE} ath10k_qca6174 qca-bt"
+
+# Enable legacy and alt firmwares
+# See crbug.com/1013032
+USE="${USE} altfw tianocore u-boot"