Clean up physmap, fix unaligned mapping problems

Convert all physmaps in dmi.c to use aligned readonly maps.
Convert all physmaps in cbtable.c to use unaligned readonly maps.
Make physunmap() a generic architecture-independent wrapper.
Add physunmap_unaligned() to complement physmap*_unaligned().

Corresponding to flashrom svn r1765.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/programmer.h b/programmer.h
index 0c51f58..d4d1f90 100644
--- a/programmer.h
+++ b/programmer.h
@@ -277,9 +277,10 @@
 /* physmap.c */
 void *physmap(const char *descr, uintptr_t phys_addr, size_t len);
 void *rphysmap(const char *descr, uintptr_t phys_addr, size_t len);
-void *physmap_round(const char *descr, uintptr_t phys_addr, size_t len);
 void *physmap_ro(const char *descr, uintptr_t phys_addr, size_t len);
+void *physmap_ro_unaligned(const char *descr, uintptr_t phys_addr, size_t len);
 void physunmap(void *virt_addr, size_t len);
+void physunmap_unaligned(void *virt_addr, size_t len);
 #if CONFIG_INTERNAL == 1
 int setup_cpu_msr(int cpu);
 void cleanup_cpu_msr(void);