fbdev: msm: mdp3: Update ion client type in map_layer

In mdp3_map_layer_buffer, the ion client type used was
incorrect when SPI panel was used. Update this argument
to cover all client types.

Change-Id: Ibabe123d40f1809cf0dbeb2e6c2d90c2dfeea1b3
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>