ath79: disable unused drivers for tiny target

Shrink the tiny kernel by moving all switch and ethernet phy drivers to
the generic kernel config instead of the target kernel config.

All boards in the tiny and nand target are either ar7240 or ar9331 based,
which don't support external xMII and therefore no external ethernet phy
can be connected. None of the boards uses a realtek switch either.

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>

target/linux/ath79/config-4.14

@@ -25,7 +25,6 @@ CONFIG_ARCH_USE_BUILTIN_BSWAP=y
 CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
 CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
 CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
-CONFIG_AT803X_PHY=y
 CONFIG_ATH79=y
 CONFIG_ATH79_WDT=y
 CONFIG_CEVT_R4K=y
@@ -127,7 +126,6 @@ CONFIG_HW_HAS_PCI=y
 CONFIG_HZ_PERIODIC=y
 CONFIG_IMAGE_CMDLINE_HACK=y
 CONFIG_INITRAMFS_SOURCE=""
-CONFIG_IP17XX_PHY=y
 CONFIG_IRQCHIP=y
 CONFIG_IRQ_DOMAIN=y
 CONFIG_IRQ_FORCED_THREADING=y
@@ -136,13 +134,11 @@ CONFIG_IRQ_WORK=y
 CONFIG_LEDS_GPIO=y
 # CONFIG_LEDS_RESET is not set
 CONFIG_LIBFDT=y
-CONFIG_MARVELL_PHY=y
 CONFIG_MDIO_BITBANG=y
 CONFIG_MDIO_BUS=y
 CONFIG_MDIO_DEVICE=y
 CONFIG_MDIO_GPIO=y
 CONFIG_MFD_SYSCON=y
-CONFIG_MICREL_PHY=y
 CONFIG_MIPS=y
 CONFIG_MIPS_ASID_BITS=8
 CONFIG_MIPS_ASID_SHIFT=0
@@ -202,10 +198,6 @@ CONFIG_REGMAP=y
 CONFIG_REGMAP_MMIO=y
 CONFIG_RESET_ATH79=y
 CONFIG_RESET_CONTROLLER=y
-CONFIG_RTL8366RB_PHY=y
-CONFIG_RTL8366S_PHY=y
-CONFIG_RTL8366_SMI=y
-CONFIG_RTL8367_PHY=y
 # CONFIG_SCHED_INFO is not set
 # CONFIG_SCSI_DMA is not set
 # CONFIG_SERIAL_8250_FSL is not set

target/linux/ath79/generic/config-default

@@ -1,6 +1,10 @@
+CONFIG_AT803X_PHY=y
 CONFIG_BLK_MQ_PCI=y
 CONFIG_INTEL_XWAY_PHY=y
+CONFIG_IP17XX_PHY=y
 CONFIG_LEDS_RESET=y
+CONFIG_MARVELL_PHY=y
+CONFIG_MICREL_PHY=y
 CONFIG_MTD_SPLIT_EVA_FW=y
 CONFIG_OF_ADDRESS_PCI=y
 CONFIG_OF_PCI=y
@@ -14,3 +18,7 @@ CONFIG_PHY_AR7100_USB=y
 CONFIG_PHY_AR7200_USB=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_RTL8366RB_PHY=y
+CONFIG_RTL8366S_PHY=y
+CONFIG_RTL8366_SMI=y
+CONFIG_RTL8367_PHY=y