board_f: Fix types for board_get_usable_ram_top()

Commit 37dc958947ed ("global_data.h: Change ram_top type to phys_addr_t")
changed type of ram_top member from ulong to phys_addr_t but did not
changed types in board_get_usable_ram_top() function which returns value
for ram_top.

So change ulong to phys_addr_t type also in board_get_usable_ram_top()
signature and implementations.

Fixes: 37dc958947ed ("global_data.h: Change ram_top type to phys_addr_t")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/broadcom/bcmns3/ns3.c b/board/broadcom/bcmns3/ns3.c
index 88036c1..26652e8 100644
--- a/board/broadcom/bcmns3/ns3.c
+++ b/board/broadcom/bcmns3/ns3.c
@@ -183,7 +183,7 @@
 }
 
 /* Limit RAM used by U-Boot to the DDR first bank End region */
-ulong board_get_usable_ram_top(ulong total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	return BCM_NS3_MEM_END;
 }
diff --git a/board/imgtec/boston/ddr.c b/board/imgtec/boston/ddr.c
index 182f79b..5b245cb 100644
--- a/board/imgtec/boston/ddr.c
+++ b/board/imgtec/boston/ddr.c
@@ -23,7 +23,7 @@
 	return 0;
 }
 
-ulong board_get_usable_ram_top(ulong total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	DECLARE_GLOBAL_DATA_PTR;
 
diff --git a/board/menlo/m53menlo/m53menlo.c b/board/menlo/m53menlo/m53menlo.c
index 61ab384..4afc5aa 100644
--- a/board/menlo/m53menlo/m53menlo.c
+++ b/board/menlo/m53menlo/m53menlo.c
@@ -42,7 +42,7 @@
 
 static u32 mx53_dram_size[2];
 
-ulong board_get_usable_ram_top(ulong total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	/*
 	 * WARNING: We must override get_effective_memsize() function here
diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
index 17b8108..00afb35 100644
--- a/board/raspberrypi/rpi/rpi.c
+++ b/board/raspberrypi/rpi/rpi.c
@@ -335,7 +335,7 @@
 /*
  * Prevent relocation from stomping on a firmware provided FDT blob.
  */
-unsigned long board_get_usable_ram_top(unsigned long total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
 		return gd->ram_top;
diff --git a/board/ti/am65x/evm.c b/board/ti/am65x/evm.c
index 8a0a506..34ec391 100644
--- a/board/ti/am65x/evm.c
+++ b/board/ti/am65x/evm.c
@@ -61,7 +61,7 @@
 	return 0;
 }
 
-ulong board_get_usable_ram_top(ulong total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 #ifdef CONFIG_PHYS_64BIT
 	/* Limit RAM used by U-Boot to the DDR low region */
diff --git a/board/ti/j721e/evm.c b/board/ti/j721e/evm.c
index 5d09004..d6e431e 100644
--- a/board/ti/j721e/evm.c
+++ b/board/ti/j721e/evm.c
@@ -57,7 +57,7 @@
 	return 0;
 }
 
-ulong board_get_usable_ram_top(ulong total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 #ifdef CONFIG_PHYS_64BIT
 	/* Limit RAM used by U-Boot to the DDR low region */
diff --git a/board/ti/j721s2/evm.c b/board/ti/j721s2/evm.c
index 3c75ecf..e09adc8 100644
--- a/board/ti/j721s2/evm.c
+++ b/board/ti/j721s2/evm.c
@@ -46,7 +46,7 @@
 	return 0;
 }
 
-ulong board_get_usable_ram_top(ulong total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 #ifdef CONFIG_PHYS_64BIT
 	/* Limit RAM used by U-Boot to the DDR low region */
diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c
index e1f7104..391ce4d 100644
--- a/board/xilinx/common/board.c
+++ b/board/xilinx/common/board.c
@@ -631,7 +631,7 @@
 #endif
 
 #if defined(CONFIG_LMB)
-ulong board_get_usable_ram_top(ulong total_size)
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	phys_size_t size;
 	phys_addr_t reg;