device/oprom: Lists all supported vesa mode by oprom

This patch lists all supported vesa mode by oprom
using Function 0x4F00 (return vbe controller information).
This information might be useful for user to select correct vesa
mode for oprom.

TEST=Enabling external pcie based graphics card on ICLRVP

Case 1: with unsupported vesa mode 0x118

Now coreboot will show below msg to user to know there is a potential
issue with choosen vesa mode and better users know the failure rather
going to depthcharge and debug further.

Calling Option ROM...
... Option ROM returned.
VBE: Getting information about VESA mode 4118
VBE: Function call invalid with unsupported video mode 0x118!
User to select mode from below list -
Supported Video Mode list for OpRom are:
0x110
0x111
0x113
0x114
0x116
0x117
0x119
0x11a
0x165
0x166
0x121
0x122
0x123
0x124
0x145
0x146
0x175
0x176
0x1d2
0x1d4

Error: In vbe_get_mode_info function

Case 2: with supported vesa mode 0x116

Calling Option ROM...
... Option ROM returned.
VBE: Getting information about VESA mode 4116
VBE: resolution:  1024x768@16
VBE: framebuffer: a0000000
VBE: Setting VESA mode 4116
VGA Option ROM was run

Change-Id: I02cba44374bc50ec3ec2819c97b6f5027c58387f
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
---
M src/device/oprom/realmode/x86.c
M src/device/oprom/yabel/vbe.c
M src/include/vbe.h
3 files changed, 60 insertions(+), 12 deletions(-)