soc/intel/apl/graphics: add missing left-shift

According to doc# IHD-OS-BXT-Vol 2b-05.17 the cycle delay is in the bit
range 8:4 of register PP_CONTROL. The current code writes the value to
bits 4:0, though. Correct that by shifting the value left by 4 bits.

Change-Id: If407932c847da39b19e307368c9e52ba1c93bccd
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48759
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions