Change in coreboot[master]: mb/google/dedede/var/bugzzy: Initialize display signals on user mode

[Simon Yang (Code Review)]

Attention is currently required from: shkim, Henry Sun, SH Kim, Paul Menzel, Simon Yang, Edward Doan, Karthik Ramasubramanian.
Simon Yang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60190 )

Change subject: mb/google/dedede/var/bugzzy: Initialize display signals on user mode
......................................................................

Patch Set 8:

(5 comments)

File src/mainboard/google/dedede/variants/bugzzy/ramstage.c:

https://review.coreboot.org/c/coreboot/+/60190/comment/732fb3fe_eb76d2f6 
PS8, Line 7: #include <drivers/intel/gma/i915_reg.h>
#include <soc/pci_devs.h>

https://review.coreboot.org/c/coreboot/+/60190/comment/0a3a3214_2519b2d6 
PS8, Line 9: #define IGD_MMIO_BASE		0xc0010000
#define IGD_MMIO_BASE(Bus, Dev, Func) (CONFIG_MMCONF_BASE_ADDRESS + (Bus << 20) + (Dev << 15) + (Func << 12))

https://review.coreboot.org/c/coreboot/+/60190/comment/0a248284_5744042f 
PS8, Line 27: addr32 = IGD_MMIO_BASE;
addr32 = IGD_MMIO_BASE(0, SA_DEV_SLOT_IGD, 0);

https://review.coreboot.org/c/coreboot/+/60190/comment/b3d6a124_2c4b1530 
PS8, Line 29: addr32 = IGD_MMIO_BASE + 0x10;
addr32 = IGD_MMIO_BASE(0, 2, 0) + PCI_BASE_ADDRESS_0;

https://review.coreboot.org/c/coreboot/+/60190/comment/664f1b7c_909c702e 
PS8, Line 36: 0xc7204
PCH_PP_CONTROL