lantiq: xway: disable unused switch drivers

lantiq: xway: disable unused switch drivers

None of the devices supported by target xway are using Realtek
RTL8366S, RTL8367A and RTL8367B switches. The switches mentioned
earlier were enabled when bumping the kernel version to 3.7 in
commit 3a948770cf46 ("add linux-v3.7").

Switches used by individual devices are listed below.

Device				Switch			PHY
Arcadyan ARV4510PW		Infineon ADM6996I	int. switch
Arcadyan ARV4519PW		Atheros AR8216		int. switch
Arcadyan ARV7506PW11		Realtek RTL8306G	int. switch
Arcadyan ARV7510PW22		Atheros AR8216		int. switch
Arcadyan ARV7518PW		Atheros AR8216		int. switch
Arcadyan ARV7519PW		Atheros RTL8306G	int. switch
Arcadyan ARV7525PW		N/A			IC+ IP101A
Arcadyan ARV752DPW		Realtek RTL8306G	int. switch
Arcadyan ARV752DPW22		Atheros AR8216		int. switch
Arcadyan ARV8539PW22		Atheros AR8216		int. switch
AVM Fritzbox 7312		int. SoC		Atheros AR8030-A
AVM Fritzbox 7320		int. SOC		Lantiq PEF7071V
AudioCodes MediaPack MP-252	Infineon ADM6996I	int. switch
BT Home Hub 2B			Infineon ADM6996I	int. switch
BT Home Hub 3A			Infineon PSB6972	Lantiq PEF7071V
Buffalo WBMR-HP-G300H-A		Atheros AR8316		int. switch
Buffalo WBMR-HP-G300H-B		Atheros AR8316		int. switch
Lantiq EASY50712		Infinein ADM6996I	int. switch
Netgear DGN3500			Realtek RTL8366RB	int. switch
Netgear DGN3500B		Realtek RTL8366RB	int. switch
Siemens	Gigaset sx76x		Infineon ADM6996I	int. switch
ZTE H201L			Realtek RTL8306G	int. switch
ZyXEL P-2601HN-F1		Realtek RTL8306E	int. switch
ZyXEL P-2601HN-F3		Realtek RTL8306E	int. switch

Reduces uncompressed kernel size by 36 kB.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
(checkpatch.pl fixes)
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
(cherry picked from commit 8b5d2a73255298b916259ccbc609e4667a335844)