cbmem_top_chipset: Change the return value to uintptr_t

Get rid of a lot of casts.

Change-Id: I93645ef5dd270905ce421e68e342aff4c331eae6
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69078
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
diff --git a/src/northbridge/intel/e7505/memmap.c b/src/northbridge/intel/e7505/memmap.c
index b1ac3d1..0d90175 100644
--- a/src/northbridge/intel/e7505/memmap.c
+++ b/src/northbridge/intel/e7505/memmap.c
@@ -3,14 +3,16 @@
 // Use simple device model for this file even in ramstage
 #define __SIMPLE_DEVICE__
 
-#include <device/pci_ops.h>
 #include <arch/romstage.h>
 #include <cbmem.h>
 #include <cpu/x86/mtrr.h>
+#include <device/pci_ops.h>
 #include <program_loading.h>
+#include <stdint.h>
+
 #include "e7505.h"
 
-void *cbmem_top_chipset(void)
+uintptr_t cbmem_top_chipset(void)
 {
 	const pci_devfn_t mch = PCI_DEV(0, 0, 0);
 	uintptr_t tolm;
@@ -19,7 +21,7 @@
 	tolm = pci_read_config16(mch, TOLM) >> 11;
 	tolm <<= 27;
 
-	return (void *)tolm;
+	return tolm;
 }
 
 void northbridge_write_smram(u8 smram);