drm/i915: Update bw_buddy pagemask table

A recent bspec update removed the LPDDR4 single channel entry from the
buddy register table, but added a new four-channel entry.

Workaround 1409767108 hasn't been updated with any guidance for four
channel configurations, so we leave that alternate table unchanged for
now.

Bspec 49218
Fixes: 3fa01d6 ("drm/i915/tgl: Program BW_BUDDY registers during display init")
Signed-off-by: Matt Roper <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Lucas De Marchi <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
(cherry picked from commit ecb40d0)
Signed-off-by: Jani Nikula <[email protected]>

Author: mattrope

drivers/gpu/drm/i915/display/intel_display_power.c

@@ -5240,10 +5240,10 @@ struct buddy_page_mask {
 };
 
 static const struct buddy_page_mask tgl_buddy_page_masks[] = {
-	{ .num_channels = 1, .type = INTEL_DRAM_LPDDR4, .page_mask = 0xE },
 	{ .num_channels = 1, .type = INTEL_DRAM_DDR4,   .page_mask = 0xF },
 	{ .num_channels = 2, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x1C },
 	{ .num_channels = 2, .type = INTEL_DRAM_DDR4,   .page_mask = 0x1F },
+	{ .num_channels = 4, .type = INTEL_DRAM_LPDDR4, .page_mask = 0x38 },
 	{}
 };