treewide: Move CONFIG_PHY_MARVELL to Kconfig

The CONFIG_PHY_MARVELL has already been migrated to Kconfig (some boards
already had it in their Kconfig), but had not been moved for older
boards.

Move it to the defconfigs for all boards.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/BSC9132QDS_SPIFLASH_DDRCLK100_defconfig b/configs/BSC9132QDS_SPIFLASH_DDRCLK100_defconfig
index e49dc66..b97f154 100644
--- a/configs/BSC9132QDS_SPIFLASH_DDRCLK100_defconfig
+++ b/configs/BSC9132QDS_SPIFLASH_DDRCLK100_defconfig
@@ -30,6 +30,7 @@
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_PHY_MARVELL=y
 CONFIG_NETDEVICES=y
 CONFIG_PHY_GIGE=y
 CONFIG_E1000=y