Remove broken ivrs/mcfg stubs from acpid base patch

The base patch referenced ivrs and mcfg modules that don't exist in the source tree, causing build failures. Removed the module declarations, imports, and init calls. MCFG is already handled by pcid (the PCI daemon). IVRS (AMD IOMMU) needs real implementation, not a stub. DMAR iterator fix and Dmar::init() call preserved.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/patches/base/redox.patch

@@ -2,23 +2,17 @@ diff --git a/drivers/acpid/src/acpi.rs b/drivers/acpid/src/acpi.rs
 index 94a1eb17..3b376904 100644
 --- a/drivers/acpid/src/acpi.rs
 +++ b/drivers/acpid/src/acpi.rs
-@@ -25,6 +25,14 @@ use amlserde::{AmlSerde, AmlSerdeValue};
+@@ -25,6 +25,8 @@ use amlserde::{AmlSerde, AmlSerdeValue};
  
  #[cfg(target_arch = "x86_64")]
  pub mod dmar;
 +#[cfg(target_arch = "x86_64")]
 +use self::dmar::Dmar;
-+#[cfg(target_arch = "x86_64")]
-+pub mod ivrs;
-+#[cfg(target_arch = "x86_64")]
-+pub mod mcfg;
-+#[cfg(target_arch = "x86_64")]
-+use self::{ivrs::Ivrs, mcfg::Mcfg};
  use crate::aml_physmem::{AmlPageCache, AmlPhysMemHandler};
  
  /// The raw SDT header struct, as defined by the ACPI specification.
-@@ -458,7 +466,12 @@ impl AcpiContext {
-         }
+@@ -458,7 +460,10 @@ impl AcpiContext {
+          }
  
          Fadt::init(&mut this);
 -        //TODO (hangs on real hardware): Dmar::init(&this);
@@ -26,8 +20,6 @@ index 94a1eb17..3b376904 100644
 +        // instead of len_bytes in DmarRawIter). Safe to call now: on AMD systems, no DMAR table
 +        // exists and this returns early with a warning.
 +        Dmar::init(&this);
-+        mcfg::Mcfg::init(&this);
-+        ivrs::Ivrs::init(&this);
  
          this
      }