drm/i915/cnl: Dump the right pll registers when dumping pipe config.

drm/i915/cnl: Dump the right pll registers when dumping pipe config.

Different from SKL we don't need ctrl1 and cfgcr2, but
we need to dump cfgcr0 and cfgcr1 instead.

v2: rebase and commit message

Cc: Clint Taylor <[email protected]>
Cc: Mika Kahola <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Reviewed-by: Mika Kahola <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]