bcm63xx: remove memcpy from mac assignment

With GCC11, memcpy doesn't work here as it assumes a size of 0. Use
ioremap to avoid it.

Fixed parameter type to match board_get_mac_address.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

target/linux/bcm63xx/patches-5.10/532-MIPS-BCM63XX-add-inventel-Livebox-support.patch

@@ -58,7 +58,7 @@ Subject: [PATCH] MIPS: BCM63XX: add inventel Livebox support
  #endif /* __BOARD_COMMON_H */
 --- /dev/null
 +++ b/arch/mips/bcm63xx/boards/board_livebox.c
-@@ -0,0 +1,153 @@
+@@ -0,0 +1,158 @@
 +/*
 + * This file is subject to the terms and conditions of the GNU General Public
 + * License. See the file "COPYING" in the main directory of this archive
@@ -130,12 +130,17 @@ Subject: [PATCH] MIPS: BCM63XX: add inventel Livebox support
 +/*
 + * register & return a new board mac address
 + */
-+static int livebox_get_mac_address(u8 *mac)
++static int livebox_get_mac_address(u8 mac[ETH_ALEN])
 +{
 +	u8 *p;
 +	int count;
++	void __iomem *volatile mmio;
 +
-+	memcpy(mac, (u8 *)0xBEBFF377, ETH_ALEN);
++	mmio = ioremap(0x1ebff377, 0x8);
++	if (!mmio)
++		return -EIO;
++	memcpy_fromio(mac, mmio, ETH_ALEN);
++	iounmap(mmio);
 +
 +	p = mac + ETH_ALEN - 1;
 +	count = mac_addr_used;

target/linux/bcm63xx/patches-5.4/532-MIPS-BCM63XX-add-inventel-Livebox-support.patch

@@ -58,7 +58,7 @@ Subject: [PATCH] MIPS: BCM63XX: add inventel Livebox support
  #endif /* __BOARD_COMMON_H */
 --- /dev/null
 +++ b/arch/mips/bcm63xx/boards/board_livebox.c
-@@ -0,0 +1,153 @@
+@@ -0,0 +1,158 @@
 +/*
 + * This file is subject to the terms and conditions of the GNU General Public
 + * License. See the file "COPYING" in the main directory of this archive
@@ -130,12 +130,17 @@ Subject: [PATCH] MIPS: BCM63XX: add inventel Livebox support
 +/*
 + * register & return a new board mac address
 + */
-+static int livebox_get_mac_address(u8 *mac)
++static int livebox_get_mac_address(u8 mac[ETH_ALEN])
 +{
 +	u8 *p;
 +	int count;
++	void __iomem *volatile mmio;
 +
-+	memcpy(mac, (u8 *)0xBEBFF377, ETH_ALEN);
++	mmio = ioremap(0x1ebff377, 0x8);
++	if (!mmio)
++		return -EIO;
++	memcpy_fromio(mac, mmio, ETH_ALEN);
++	iounmap(mmio);
 +
 +	p = mac + ETH_ALEN - 1;
 +	count = mac_addr_used;