disp: pll: fix sequence as per hardware recommendations

Update the PLL and PHY power on and clock set sequence as per
the hardware recommendations. Move the post link clock phy enable
part to the catalog so that it can be programmed after enabling
link clock.

Change-Id: I9b3b49e5a9ac93bebcb1cb7da63b715a8d5ed85c
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>