arm/dt: 8226: remove unused serial device
arm/dt: 8226: remove unused serial device

The serial device will be renabled only when it is used.

Change-Id: If0c36a6eacca768b4f18056389d42ac542f56800
Signed-off-by: Syed Rameez Mustafa <d316c38b3127db4a8d19f369f757269f344aa63c@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas