MAINTAINERS: Add myself as reviewer for Ingenic rproc driver

Add myself as the reviewer for the Ingenic VPU remoteproc driver.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200515104340.10473-5-paul@crapouillou.net


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>