drm/i915/psr: Fix BDW PSR AUX CH data register offsets

The multiplication got replaced by an addition in some cleanup.
This means we never write the correct data to some of the BDW
PSR data registers and thus we fail to actually wake up the
panel from PSR.

Fixes: 4ab4fa1 ("drm/i915/psr: Make PSR registers relative to transcoders")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230609141404.12729-3-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
(cherry picked from commit 460dc4b)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

drivers/gpu/drm/i915/display/intel_psr_regs.h

@@ -81,7 +81,7 @@
 
 #define _SRD_AUX_DATA_A				0x60814
 #define _SRD_AUX_DATA_EDP			0x6f814
-#define EDP_PSR_AUX_DATA(tran, i)		_MMIO_TRANS2(tran, _SRD_AUX_DATA_A + (i) + 4) /* 5 registers */
+#define EDP_PSR_AUX_DATA(tran, i)		_MMIO_TRANS2(tran, _SRD_AUX_DATA_A + (i) * 4) /* 5 registers */
 
 #define _SRD_STATUS_A				0x60840
 #define _SRD_STATUS_EDP				0x6f840