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
specifier.

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/flashrom.c b/flashrom.c
index b9c0395..b05faf3 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -417,8 +417,7 @@
 	return ret;
 }
 
-void *programmer_map_flash_region(const char *descr, unsigned long phys_addr,
-				  size_t len)
+void *programmer_map_flash_region(const char *descr, uintptr_t phys_addr, size_t len)
 {
 	return programmer_table[programmer].map_flash_region(descr,
 							     phys_addr, len);