--- zzzz-none-000/linux-3.10.107/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h	2021-02-04 17:41:59.000000000 +0000
@@ -30,4 +30,6 @@
  */
 int bcm63xx_nvram_get_mac_address(u8 *mac);
 
+int bcm63xx_nvram_get_psi_size(void);
+
 #endif /* BCM63XX_NVRAM_H */