asahi_firmware: Copy ASMedia firmware for u-boot

Signed-off-by: Hector Martin <marcan@marcan.st>

asahi_firmware/core.py

@@ -3,6 +3,10 @@
 from hashlib import sha256
 from . import cpio
 
+UBOOT_FILES = set([
+    "asmedia/asm2214a-apple.bin"
+])
+
 class FWFile(object):
     def __init__(self, name, data):
         self.name = name
@@ -76,6 +80,12 @@ def add_file(self, name, data):
             ti.linkname = os.path.join("vendorfw", ti.linkname)
         self.cpiofile.addfile(ti, fd)
 
+        if name in UBOOT_FILES:
+            path = os.path.join(self.path, "u-boot", name)
+            os.makedirs(os.path.dirname(path), exist_ok=True)
+            with open(path, "wb") as fd:
+                fd.write(data.data)
+
     def add_files(self, it):
         for name, data in it:
             self.add_file(name, data)