lcd: update p2p config and pll setting for tl1 [1/1]

lcd: update p2p config and pll setting for tl1 [1/1]

PD#SWPL-3108

Problem:
1. tcon pll don't support spread spectrum yet
2. no p2p parameters config

Solution:
1. add p2p config parameters
2. enable tl1 clk parameters auto generate
3. add tl1 tcon_pll spread spectrum support
4. update clk spread spectrum api:
   set ss_level(hex val):
       echo level <val> >/sys/class/lcd/ss
   set ss_freq(hex val):
       echo freq <val> >/sys/class/lcd/ss
   set ss_mode(hex val):
       echo mode <val> >/sys/class/lcd/ss
   set ss advance(hex val, [15:12]=mode, [11:8]=freq, [7:0]=level):
       echo <val> >/sys/class/lcd/ss
   show ss_level, ss_freq, ss_mode:
       cat /sys/class/lcd/ss

Verify:
x301

Change-Id: I99eeca84290403fe766b17673ba9b0f7429fae26
Signed-off-by: Evoke Zhang <evoke.zhang@amlogic.com>