Uintptr_t-ify map_flash_region functions

Unsigned long is not the right type for manipulating pointer values.
Since C99 there are suitable unsigned and signed types available, namely
uintptr_t and intptr_t respectively.

Use them in functions assigned to programmers' map_flash_region fields and
their callers where applicable.

This patch also changes the display width of all associated address values in
physmap.c to 16/8 hex characters depending on the actual size by
introducing a macro PRIxPTR_WIDTH and exploiting printf's * field width

Corresponding to flashrom svn r1701.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/programmer.c b/programmer.c
index 3b4def0..bf7dca1 100644
--- a/programmer.c
+++ b/programmer.c
@@ -28,7 +28,7 @@
 /* Fallback map() for programmers which don't need special handling */
-void *fallback_map(const char *descr, unsigned long phys_addr, size_t len)
+void *fallback_map(const char *descr, uintptr_t phys_addr, size_t len)
 	/* FIXME: Should return phys_addr. */
 	return NULL;