parisc: Switch to ARCH_STACKWALK implementation

It's shorter and kfence currently depends on this stack unwinding
implementation.

Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 27a8b49..aee25be 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -13,6 +13,8 @@
 	select ARCH_NO_SG_CHAIN
 	select ARCH_SUPPORTS_HUGETLBFS if PA20
 	select ARCH_SUPPORTS_MEMORY_FAILURE
+	select ARCH_STACKWALK
+	select HAVE_RELIABLE_STACKTRACE
 	select DMA_OPS
 	select RTC_CLASS
 	select RTC_DRV_GENERIC