core: Various fixups pre-release

- actions: Switch to the Raspberry Pi libcamera repo
- core: Add MISSING enum value where /dev/video0 does not exist to keep
  existing behaviour.
- core: Set default verbosity during init to 1, to match the default
  option value

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

.github/workflows/libcamera-test.yml

@@ -24,7 +24,7 @@ jobs:
       run: rm -rf ${{env.LIBCAMERA_SRC_DIR}}
 
     - name: Pull libcamera
-      run: git clone --depth=1 git://linuxtv.org/libcamera.git ${{env.LIBCAMERA_SRC_DIR}}
+      run: git clone --depth=1 https://github.com/raspberrypi/libcamera.git ${{env.LIBCAMERA_SRC_DIR}}
 
     - name: libcamera version
       run: cd ${{env.LIBCAMERA_SRC_DIR}} && git log -1

core/libcamera_app.cpp

@@ -23,10 +23,11 @@
 
 #include <libcamera/base/shared_fd.h>
 
-unsigned int LibcameraApp::verbosity = 2;
+unsigned int LibcameraApp::verbosity = 1;
 
 enum class Platform
 {
+	MISSING,
 	UNKNOWN,
 	LEGACY,
 	VC4,
@@ -37,7 +38,7 @@ Platform get_platform()
 {
 	int fd = open("/dev/video0", O_RDWR, 0);
 	if (fd < 0)
-		return Platform::UNKNOWN;
+		return Platform::MISSING;
 
 	v4l2_capability caps;
 	unsigned long request = VIDIOC_QUERYCAP;