The hantro_variant.init() function is there for platforms to perform hardware-specific initialization, such as clock rate bumping. Not all platforms require it, so make it optional. Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Tested-by: Alex Bee <knaerzche@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>