pstore: Add support for 64 Bit address space

Some architectures have their reserved RAM in 64 Bit address space.
Therefore convert mem_address module parameter to ullong.

Signed-off-by: Wladislav Wiebe <wladislav.wiebe@nokia.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>

fs/pstore/ram.c

@@ -55,8 +55,8 @@ static ulong ramoops_pmsg_size = MIN_MEM_SIZE;
 module_param_named(pmsg_size, ramoops_pmsg_size, ulong, 0400);
 MODULE_PARM_DESC(pmsg_size, "size of user space message log");
 
-static ulong mem_address;
-module_param(mem_address, ulong, 0400);
+static unsigned long long mem_address;
+module_param(mem_address, ullong, 0400);
 MODULE_PARM_DESC(mem_address,
 		"start of reserved RAM used to store oops/panic logs");