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/dummyflasher.c b/dummyflasher.c
index e2ec036..cc15b00 100644
--- a/dummyflasher.c
+++ b/dummyflasher.c
@@ -412,10 +412,10 @@
 	return 0;
 }
 
-void *dummy_map(const char *descr, unsigned long phys_addr, size_t len)
+void *dummy_map(const char *descr, uintptr_t phys_addr, size_t len)
 {
-	msg_pspew("%s: Mapping %s, 0x%lx bytes at 0x%08lx\n",
-		  __func__, descr, (unsigned long)len, phys_addr);
+	msg_pspew("%s: Mapping %s, 0x%lx bytes at 0x%*" PRIxPTR "\n",
+		  __func__, descr, (unsigned long)len, PRIxPTR_WIDTH, phys_addr);
 	return (void *)phys_addr;
 }