ath79: widen RedBoot directory search and add PHY

The Bluesocket BSAP1880 board has a Vitesse PHY, for which the driver was
not being included, and its RedBoot directory block is earlier in the
flash than the search was allowing. This commit prepares for supporting it.

Signed-off-by: Daniel Gimpelevich <[email protected]>

target/linux/ath79/generic/config-default

@@ -8,7 +8,7 @@ CONFIG_LEDS_RESET=y
 CONFIG_MARVELL_PHY=y
 CONFIG_MICREL_PHY=y
 CONFIG_MTD_REDBOOT_PARTS=y
-CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-2
+CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-3
 CONFIG_MTD_SPLIT_EVA_FW=y
 CONFIG_OF_ADDRESS_PCI=y
 CONFIG_OF_PCI=y
@@ -26,4 +26,5 @@ CONFIG_RTL8366RB_PHY=y
 CONFIG_RTL8366S_PHY=y
 CONFIG_RTL8366_SMI=y
 CONFIG_RTL8367_PHY=y
+CONFIG_VITESSE_PHY=y
 CONFIG_WATCHDOG_CORE=y