powerpc/32s: Move setup_{kuep/kuap}() into {kuep/kuap}.c

Avoids the #ifdef in mmu.c
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0b7a13d414837e58264edc336b89c2fe9f35f9bc.1622708530.git.christophe.leroy@csgroup.eu

arch/powerpc/mm/book3s32/Makefile

@@ -10,3 +10,4 @@ obj-y += mmu.o mmu_context.o
 obj-$(CONFIG_PPC_BOOK3S_603) += nohash_low.o
 obj-$(CONFIG_PPC_BOOK3S_604) += hash_low.o tlb.o
 obj-$(CONFIG_PPC_KUEP) += kuep.o
+obj-$(CONFIG_PPC_KUAP) += kuap.o

arch/powerpc/mm/book3s32/kuap.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <asm/kup.h>
+
+void __init setup_kuap(bool disabled)
+{
+	pr_info("Activating Kernel Userspace Access Protection\n");
+
+	if (disabled)
+		pr_warn("KUAP cannot be disabled yet on 6xx when compiled in\n");
+}

arch/powerpc/mm/book3s32/kuep.c

@@ -38,3 +38,11 @@ void kuep_unlock(void)
 {
 	kuep_update(mfsr(0) & ~SR_NX);
 }
+
+void __init setup_kuep(bool disabled)
+{
+	pr_info("Activating Kernel Userspace Execution Prevention\n");
+
+	if (disabled)
+		pr_warn("KUEP cannot be disabled yet on 6xx when compiled in\n");
+}

arch/powerpc/mm/book3s32/mmu.c

@@ -445,26 +445,6 @@ void __init print_system_hash_info(void)
 		pr_info("Hash_mask         = 0x%lx\n", Hash_mask);
 }
 
-#ifdef CONFIG_PPC_KUEP
-void __init setup_kuep(bool disabled)
-{
-	pr_info("Activating Kernel Userspace Execution Prevention\n");
-
-	if (disabled)
-		pr_warn("KUEP cannot be disabled yet on 6xx when compiled in\n");
-}
-#endif
-
-#ifdef CONFIG_PPC_KUAP
-void __init setup_kuap(bool disabled)
-{
-	pr_info("Activating Kernel Userspace Access Protection\n");
-
-	if (disabled)
-		pr_warn("KUAP cannot be disabled yet on 6xx when compiled in\n");
-}
-#endif
-
 void __init early_init_mmu(void)
 {
 }