MIPS: octeon: Replace memset(0) + deprecated strcpy() with strscpy_pad()

Replace memset(0) followed by the deprecated strcpy() with strscpy_pad()
to improve octeon_fdt_set_phy(). This avoids zeroing the memory before
copying the string and ensures the destination buffer is only written to
once, simplifying the code and improving efficiency.

Link: KSPP#88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Author: toblux

arch/mips/cavium-octeon/octeon-platform.c

@@ -13,6 +13,7 @@
 #include <linux/of_fdt.h>
 #include <linux/platform_device.h>
 #include <linux/libfdt.h>
+#include <linux/string.h>
 
 #include <asm/octeon/octeon.h>
 #include <asm/octeon/cvmx-helper-board.h>
@@ -538,8 +539,7 @@ static void __init octeon_fdt_set_phy(int eth, int phy_addr)
 
 	if (octeon_has_88e1145()) {
 		fdt_nop_property(initial_boot_params, phy, "marvell,reg-init");
-		memset(new_name, 0, sizeof(new_name));
-		strcpy(new_name, "marvell,88e1145");
+		strscpy_pad(new_name, "marvell,88e1145");
 		p = fdt_getprop(initial_boot_params, phy, "compatible",
 				&current_len);
 		if (p && current_len >= strlen(new_name))