ARM: tegra114: clock: avoid touching DISP clocks on init

ARM: tegra114: clock: avoid touching DISP clocks on init

The clock initialization routine sets the DISP* clock parent to PLLC,
resulting in DC failure in the case when PLLD was previously configured.
This issue disrupts chainloading and to prevent failures caused by DISP*
clock parent conflicts, clock initialization should not modify DISP*. The
DC driver handles DISP* configuration.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>