ARM64: defconfig: enable IR core, decoders and Meson IR device

This patch enables the MEDIA Infrared RC Decoders and Meson Infrared
decoder for ARM64 defconfig.
These drivers are selected as modules by default.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
[khilman: make RC_CORE modular too]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Signed-off-by: Kevin Hilman <khilman@baylibre.com>