uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/os-specific/linux/firmware/fwupd/efi-app-path.patch

@@ -0,0 +1,13 @@
+diff --git a/meson.build b/meson.build
+index 4330512e..e53b70ab 100644
+--- a/meson.build
++++ b/meson.build
+@@ -403,7 +403,7 @@ endif
+ if build_standalone and get_option('plugin_uefi_capsule')
+   efiboot = dependency('efiboot')
+ 
+-  efi_app_location = join_paths(libexecdir, 'fwupd', 'efi')
++  efi_app_location = join_paths(dependency('fwupd-efi').get_pkgconfig_variable('prefix'), 'libexec', 'fwupd', 'efi')
+   conf.set_quoted('EFI_APP_LOCATION', efi_app_location)
+ 
+   if host_cpu == 'x86'