i965: Add gen8 surface state debug info

i965: Add gen8 surface state debug info

AFAICT, none of the old data was wrong (the gen7 decoder), but it wa smissing a
bunch of stuff.

Adds a tick (') to denote the beginning of the surface state for easier reading.
This will be replaced later with some better, but more risky code.

OLD:
0x00007980:      0x23016000:     SURF: 2D BRW_SURFACEFORMAT_B8G8R8A8_UNORM
0x00007984:      0x18000000:     SURF: offset
0x00007988:      0x00ff00ff:     SURF: 256x256 size, 0 mips, 1 slices
0x0000798c:      0x000003ff:     SURF: pitch 1024, tiled
0x00007990:      0x00000000:     SURF: min array element 0, array extent 1
0x00007994:      0x00000000:     SURF: mip base 0
0x00007998:      0x00000000:     SURF: x,y offset: 0,0
0x0000799c:      0x09770000:     SURF:
0x00007940:      0x231d7000:     SURF: 2D BRW_SURFACEFORMAT_R8G8B8A8_UNORM
0x00007944:      0x78000000:     SURF: offset
0x00007948:      0x001f001f:     SURF: 32x32 size, 0 mips, 1 slices
0x0000794c:      0x0000007f:     SURF: pitch 128, tiled
0x00007950:      0x00000000:     SURF: min array element 0, array extent 1
0x00007954:      0x00000000:     SURF: mip base 0
0x00007958:      0x00000000:     SURF: x,y offset: 0,0
0x0000795c:      0x09770000:     SURF:

NEW (v1):
0x00007980:      0x23016000:    SURF': 2D B8G8R8A8_UNORM  VALIGN4 HALIGN4 X-tiled
0x00007984:      0x18000000:     SURF: MOCS: 0x18 Base MIP: 0.0 (0 mips) Surface QPitch: 0
0x00007988:      0x00ff00ff:     SURF: 256x256 [AUX_NONE]
0x0000798c:      0x000003ff:     SURF: 1 slices (depth), pitch: 1024
0x00007990:      0x00000000:     SURF: min array element: 0, array extent 1, MULTISAMPLE_1
0x00007994:      0x00000000:     SURF: x,y offset: 0,0, min LOD: 0
0x00007998:      0x00000000:     SURF: AUX pitch: 0 qpitch: 0
0x0000799c:      0x09770000:     SURF: Clear color: ----
0x00007940:      0x231d7000:    SURF': 2D R8G8B8A8_UNORM  VALIGN4 HALIGN4 Y-tiled
0x00007944:      0x78000000:     SURF: MOCS: 0x78 Base MIP: 0 (0 mips) Surface QPitch: ff0000
0x00007948:      0x001f001f:     SURF: 32x32 [AUX_NONE]
0x0000794c:      0x0000007f:     SURF: 1 slices (depth), pitch: 128
0x00007950:      0x00000000:     SURF: min array element: 0, array extent 1, MULTISAMPLE_1
0x00007954:      0x00000000:     SURF: x,y offset: 0,0, min LOD: 0
0x00007958:      0x00000000:     SURF: AUX pitch: 0 qpitch: 0
0x0000795c:      0x09770000:     SURF: Clear color: ----
0x00007920:      0x00007980:    BIND0: surface state address
0x00007924:      0x00007940:    BIND1: surface state address

v2: Style cleanups (Matt)
Fix aux mode dword 7->6 (Topi)
Use exp2 instead of pow (Matt)
Add dwords 8-12 to the dump

v3: Needed to update the surface format name getter for the change in the first
patch in the series

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Cc: Matt Turner <mattst88@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>