ppc: use generic_msi

Change-Id: Ibe9e80bc9853f529bc1f0ef3dad78cd37af82280
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6911
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

src/system/kernel/arch/ppc/Jamfile

@@ -55,6 +55,8 @@ KernelMergeObject kernel_arch_ppc.o :
 	arch_vm_translation_map.cpp
 	arch_asm.S
 
+	generic_msi.cpp
+
 	# serial uart
 	debug_uart.cpp
 	debug_uart_8250.cpp