w64: Fix size of ram_addr_t

ram_addr_t must be large enough to address any address of the host.

For hosts with sizeof(unsigned long) == sizeof(void *), this patch
changes nothing. All currently supported hosts fall into this category.

For w64 hosts, sizeof(unsigned long) is 4 while sizeof(void *) is 8,
so the use of uintptr_t is needed.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

cpu-common.h

@@ -28,9 +28,9 @@ typedef uint64_t ram_addr_t;
 #  define RAM_ADDR_MAX UINT64_MAX
 #  define RAM_ADDR_FMT "%" PRIx64
 #else
-typedef unsigned long ram_addr_t;
-#  define RAM_ADDR_MAX ULONG_MAX
-#  define RAM_ADDR_FMT "%lx"
+typedef uintptr_t ram_addr_t;
+#  define RAM_ADDR_MAX UINTPTR_MAX
+#  define RAM_ADDR_FMT "%" PRIxPTR
 #endif
 
 /* memory API */