Add new base and BORE-enabled Linux kernel packages for Omarchy

Signed-off-by: Krzysztof Wilczyński <kwilczynski@omarchy.org>

pkgbuilds/linux-omarchy/0420-safe-window.patch

@@ -0,0 +1,23 @@
+diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
+--- a/drivers/gpu/drm/i915/display/intel_display.c
++++ b/drivers/gpu/drm/i915/display/intel_display.c
+@@ -2452,6 +2452,19 @@ static int intel_crtc_set_context_latency(struct intel_crtc_state *crtc_state)
+ 	set_context_latency = max(set_context_latency,
+ 				  intel_psr_min_set_context_latency(crtc_state));
+ 
++	/*
++	 * From PTL onwards, the set context latency can be in the vactive
++	 * region, letting the safe window start some lines before the vblank
++	 * start. With modes that have a smaller vblank region, the computed
++	 * guardband is clamped to the vblank length, making the undelayed and
++	 * delayed vblank coincide. If the SCL is also 0, the 'safe window'
++	 * becomes effectively 0, and the DSB configured to wait for it gets
++	 * stalled, since the hardware never signals the safe window. Keep the
++	 * set context latency at a minimum of 1 to avoid this.
++	 */
++	if (DISPLAY_VER(display) >= 30)
++		set_context_latency = max(1, set_context_latency);
++
+ 	return set_context_latency;
+ }
+