s390/mm: use pr_err() instead of printk() for pte_ERROR & friends

Use pr_err() to use a proper printk level.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/include/asm/pgtable.h

@@ -67,15 +67,15 @@ extern unsigned long zero_page_mask;
 /* TODO: s390 cannot support io_remap_pfn_range... */
 
 #define pte_ERROR(e) \
-	printk("%s:%d: bad pte %p.\n", __FILE__, __LINE__, (void *) pte_val(e))
+	pr_err("%s:%d: bad pte %p.\n", __FILE__, __LINE__, (void *) pte_val(e))
 #define pmd_ERROR(e) \
-	printk("%s:%d: bad pmd %p.\n", __FILE__, __LINE__, (void *) pmd_val(e))
+	pr_err("%s:%d: bad pmd %p.\n", __FILE__, __LINE__, (void *) pmd_val(e))
 #define pud_ERROR(e) \
-	printk("%s:%d: bad pud %p.\n", __FILE__, __LINE__, (void *) pud_val(e))
+	pr_err("%s:%d: bad pud %p.\n", __FILE__, __LINE__, (void *) pud_val(e))
 #define p4d_ERROR(e) \
-	printk("%s:%d: bad p4d %p.\n", __FILE__, __LINE__, (void *) p4d_val(e))
+	pr_err("%s:%d: bad p4d %p.\n", __FILE__, __LINE__, (void *) p4d_val(e))
 #define pgd_ERROR(e) \
-	printk("%s:%d: bad pgd %p.\n", __FILE__, __LINE__, (void *) pgd_val(e))
+	pr_err("%s:%d: bad pgd %p.\n", __FILE__, __LINE__, (void *) pgd_val(e))
 
 /*
  * The vmalloc and module area will always be on the topmost area of the