Fix PXE boot

-tar fs buffer upgraded to 9Mb
-adding some kernel addons

With this settings i was able to fully boot a gcc2hybrid.
The x86_64 started up to the rocket, but could'nt go into Tracker.

Change-Id: I8f9e1f803f4a918419305bce3068ffce027d2548
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5295
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

build/jam/images/NetBootArchive

@@ -10,17 +10,18 @@ SYSTEM_ADD_ONS_DRIVERS_NET = [ FFilterByBuildFeatures
 	x86 @{
 		3com atheros813x atheros81xx
 		broadcom440x broadcom570x ipro1000
-		rtl8139 rtl81xx
+		rtl8139 
 		via_rhine ipro100 nforce
 		marvell_yukon sis900 syskonnect
 		attansic_l2
 	}@ # x86
 
-	etherpci pegasus usb_ecm wb840
+	rtl81xx etherpci pegasus usb_ecm wb840
 ] ;
 SYSTEM_ADD_ONS_BUS_MANAGERS = [ FFilterByBuildFeatures
 	pci isa@x86 ata
-	scsi agp_gart
+	scsi agp_gart 
+	dpc acpi 
 ] ;
 SYSTEM_ADD_ONS_FILE_SYSTEMS = bfs packagefs ;
 

src/system/boot/loader/file_systems/tarfs/tarfs.cpp

@@ -35,7 +35,7 @@
 
 static const uint32 kFloppyArchiveOffset = BOOT_ARCHIVE_IMAGE_OFFSET * 1024;
 	// defined at build time, see build/jam/BuildSetup
-static const size_t kTarRegionSize = 8 * 1024 * 1024;	// 8 MB
+static const size_t kTarRegionSize = 9 * 1024 * 1024;	// 9 MB
 
 
 using std::nothrow;