feat: Intel BT firmware download, A2dp & Bluetooth audio progress

kernel/src/Main.cpp

@@ -30,6 +30,7 @@
 #include <Drivers/PS2/Keyboard.hpp>
 #include <Drivers/PS2/Mouse.hpp>
 #include <Drivers/Init.hpp>
+#include <Drivers/USB/Bluetooth/Bluetooth.hpp>
 #include <Graphics/Cursor.hpp>
 #include <Hal/MSR.hpp>
 #include <Hal/Cpu.hpp>
@@ -178,6 +179,11 @@ extern "C" void kmain() {
 
     Fs::InitializeBootFilesystems(module_request.response);
 
+    // A Bluetooth adapter present at boot enumerates during the xHCI port scan,
+    // before the ramdisk is mounted.  Now that drive 0 is up, finish any
+    // firmware-dependent bring-up that was deferred (loads ibt-*.sfi/.ddc).
+    Drivers::USB::Bluetooth::ServiceDeferredInit();
+
     Hal::LoadTSS();
     Montauk::InitializeSyscalls();