r8a7779: Add Display Unit clock support
r8a7779: Add Display Unit clock support

Signed-off-by: Phil Edworthy <971bddb2e701dbc38bbbb5673c620edba0e95e2e@renesas.com>
[Rename device from to rcarfb to rcar-du]
Signed-off-by: Laurent Pinchart <ae960578cc5eca7b9b1dbc37d9caa6cb634f35e0@ideasonboard.com>
[Manual conflict resolution]
Signed-off-by: Simon Horman <9662bddcc379be37df16f02a449c344b4718c1a1@verge.net.au>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs