x86: Use unsigned long for address in table generation

We should use unsigned long rather than u32 for addresses. Update this so
that the table-generation code builds correctly on 64-bit machines.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

include/smbios.h

@@ -225,7 +225,7 @@ static inline void fill_smbios_header(void *table, int type,
  * @handle:	the structure's handle, a unique 16-bit number
  * @return:	size of the structure
  */
-typedef int (*smbios_write_type)(uintptr_t *addr, int handle);
+typedef int (*smbios_write_type)(ulong *addr, int handle);
 
 /**
  * write_smbios_table() - Write SMBIOS table
@@ -235,6 +235,6 @@ typedef int (*smbios_write_type)(uintptr_t *addr, int handle);
  * @addr:	start address to write SMBIOS table
  * @return:	end address of SMBIOS table
  */
-uintptr_t write_smbios_table(uintptr_t addr);
+ulong write_smbios_table(ulong addr);
 
 #endif /* _SMBIOS_H_ */