powerpc/mm: Rename hpte_init_lpar() and move the fallback to a header

hpte_init_lpar() is part of the pseries platform, so name it as such.

Move the fallback implementation for when PSERIES=n into the header,
dropping the weak implementation. The panic() is now handled by the
calling code.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/include/asm/book3s/64/mmu-hash.h

@@ -391,8 +391,13 @@ int htab_remove_mapping(unsigned long vstart, unsigned long vend,
 extern void add_gpage(u64 addr, u64 page_size, unsigned long number_of_pages);
 extern void demote_segment_4k(struct mm_struct *mm, unsigned long addr);
 
+#ifdef CONFIG_PPC_PSERIES
+void hpte_init_pseries(void);
+#else
+static inline void hpte_init_pseries(void) { }
+#endif
+
 extern void hpte_init_native(void);
-extern void hpte_init_lpar(void);
 extern void hpte_init_beat(void);
 extern void hpte_init_beat_v3(void);
 

arch/powerpc/mm/hash_utils_64.c

@@ -885,11 +885,6 @@ static void __init htab_initialize(void)
 #undef KB
 #undef MB
 
-void __init __weak hpte_init_lpar(void)
-{
-	panic("FW_FEATURE_LPAR set but no LPAR support compiled\n");
-}
-
 void __init hash__early_init_mmu(void)
 {
 	/*
@@ -930,7 +925,7 @@ void __init hash__early_init_mmu(void)
 	if (firmware_has_feature(FW_FEATURE_PS3_LV1))
 		ps3_early_mm_init();
 	else if (firmware_has_feature(FW_FEATURE_LPAR))
-		hpte_init_lpar();
+		hpte_init_pseries();
 	else if IS_ENABLED(CONFIG_PPC_NATIVE)
 		hpte_init_native();
 

arch/powerpc/platforms/pseries/lpar.c

@@ -589,7 +589,7 @@ static int __init disable_bulk_remove(char *str)
 
 __setup("bulk_remove=", disable_bulk_remove);
 
-void __init hpte_init_lpar(void)
+void __init hpte_init_pseries(void)
 {
 	mmu_hash_ops.hpte_invalidate	 = pSeries_lpar_hpte_invalidate;
 	mmu_hash_ops.hpte_updatepp	 = pSeries_lpar_hpte_updatepp;