drivers: soc: Allow building the amlogic drivers without ARCH_MESON

[ Upstream commit 41bb5769b7f4b7a85e4b92c37429228279b4f569 ]

The current condition makes it difficult to compile the amlogic/
drivers with COMPILE_TEST, or without ARCH_MESON in general.

Fixes kbuild errors with patch series that depend on drivers in that
directory, for instance the meson video decoder.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>