gemini: nuke 3.10 support

target/linux/gemini/config-3.10

target/linux/gemini/patches-3.10/002-gemini-rtc.patch

...ini/patches-3.10/110-watchdog-add-gemini_wdt-driver.patch

...ini/patches-3.10/111-arm-gemini-add-watchdog-device.patch

...tches-3.10/112-arm-gemini-register-watchdog-devices.patch

.../gemini/patches-3.10/120-net-add-gemini-gmac-driver.patch

...emini/patches-3.10/121-arm-gemini-register-ethernet.patch

target/linux/gemini/patches-3.10/130-usb-ehci-fot2g.patch

...nux/gemini/patches-3.10/132-arm-gemini-register-usb.patch

.../gemini/patches-3.10/140-arm-gemini-add-pci-support.patch

target/linux/gemini/patches-3.10/150-gemini-pata.patch

target/linux/gemini/raidsonic/config-3.10