riscv: Select ARCH_HAS_DEBUG_VM_PGTABLE

This allows the pgtable tests to be built.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index bf6a9fe..bc37241 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -15,6 +15,7 @@
 	select ARCH_CLOCKSOURCE_INIT
 	select ARCH_SUPPORTS_ATOMIC_RMW
 	select ARCH_HAS_BINFMT_FLAT
+	select ARCH_HAS_DEBUG_VM_PGTABLE
 	select ARCH_HAS_DEBUG_VIRTUAL if MMU
 	select ARCH_HAS_DEBUG_WX
 	select ARCH_HAS_GCOV_PROFILE_ALL