OvmfPkg/Bhyve: don't exit early if RSDP is not found in memory

If OVMF fails to find the RSDP in memory, it should fall back installing
the statically provided ACPI tables.

Signed-off-by: Corvin Köhne <corvink@FreeBSD.org>

PR:			273560
Reviewed by:		madpilot, manu
Approved by:		manu
Fixes:			8097dda40a ("sysutils/edk2: update to 202308")
Sponsored by:		Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D41769

sysutils/edk2/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	edk2
 PORTVERSION=	g202308
+PORTREVISION=	1
 CATEGORIES=	sysutils
 
 PATCH_SITES=	https://github.com/${GH_ACCOUNT}/${GH_PROJECT}/commit/

sysutils/edk2/files/patch-OvmfPkg_Bhyve_AcpiPlatformDxe_AcpiPlatform.c

@@ -0,0 +1,38 @@
+--- OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatform.c.orig	2023-09-07 08:35:06 UTC
++++ OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatform.c
+@@ -259,19 +259,17 @@ InstallAcpiTables (
+              BHYVE_BIOS_PHYSICAL_END,
+              &Rsdp
+              );
+-  if (EFI_ERROR (Status)) {
+-    return Status;
+-  }
+-
+-  Status = InstallAcpiTablesFromRsdp (
+-             AcpiTable,
+-             Rsdp
+-             );
+   if (!EFI_ERROR (Status)) {
+-    return EFI_SUCCESS;
++    Status = InstallAcpiTablesFromRsdp (
++              AcpiTable,
++              Rsdp
++              );
++    if (!EFI_ERROR (Status)) {
++      return EFI_SUCCESS;
++    }
+   }
+ 
+-  if (Status != EFI_NOT_FOUND) {
++  if (EFI_ERROR (Status)) {
+     DEBUG (
+       (
+        DEBUG_WARN,
+@@ -280,7 +278,6 @@ InstallAcpiTables (
+        Status
+       )
+       );
+-    return Status;
+   }
+ 
+   Status = InstallOvmfFvTables (AcpiTable);