spl: Drop use of uintptr_t

U-Boot uses ulong for addresses. It is confusing to use uintptr_t in a
few places, since it makes people wonder if the types are compatible.
Change the few occurences in SPL to use ulong

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/spl.h b/include/spl.h
index 269e36b..43b344d 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -268,8 +268,8 @@
 struct spl_image_info {
 	const char *name;
 	u8 os;
-	uintptr_t load_addr;
-	uintptr_t entry_point;
+	ulong load_addr;
+	ulong entry_point;
 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
 	void *fdt_addr;
 #endif
@@ -951,9 +951,9 @@
  *
  * Return: bl31 params structure pointer
  */
-struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
-					     uintptr_t bl33_entry,
-					     uintptr_t fdt_addr);
+struct bl31_params *bl2_plat_get_bl31_params(ulong bl32_entry,
+					     ulong bl33_entry,
+					     ulong fdt_addr);
 
 /**
  * bl2_plat_get_bl31_params_default() - prepare params for bl31.
@@ -972,9 +972,9 @@
  *
  * Return: bl31 params structure pointer
  */
-struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry,
-						     uintptr_t bl33_entry,
-						     uintptr_t fdt_addr);
+struct bl31_params *bl2_plat_get_bl31_params_default(ulong bl32_entry,
+						     ulong bl33_entry,
+						     ulong fdt_addr);
 
 /**
  * bl2_plat_get_bl31_params_v2() - return params for bl31
@@ -988,9 +988,9 @@
  *
  * Return: bl31 params structure pointer
  */
-struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry,
-					      uintptr_t bl33_entry,
-					      uintptr_t fdt_addr);
+struct bl_params *bl2_plat_get_bl31_params_v2(ulong bl32_entry,
+					      ulong bl33_entry,
+					      ulong fdt_addr);
 
 /**
  * bl2_plat_get_bl31_params_v2_default() - prepare params for bl31.
@@ -1007,9 +1007,9 @@
  *
  * Return: bl31 params structure pointer
  */
-struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
-						      uintptr_t bl33_entry,
-						      uintptr_t fdt_addr);
+struct bl_params *bl2_plat_get_bl31_params_v2_default(ulong bl32_entry,
+						      ulong bl33_entry,
+						      ulong fdt_addr);
 /**
  * spl_optee_entry - entry function for optee
  *