ARM: shmobile: r8a7791: Remove legacy clock aliases for DT devices

ARM: shmobile: r8a7791: Remove legacy clock aliases for DT devices

Now that the r8a7791 DT platforms use the common clock framework,
there's no need to manually create clock aliases for devices
instantiated through DT, as those devices will reference their clocks
directly in the device tree. Remove those aliases.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit a8a8266229787241e1dfdb075a416e31da2fa1d7)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>