Remove I2C and USB driver.

Change-Id: I7aeb6a7df10612679a4bf33f7bd24a8c36067bfc
diff --git a/arch/mips/configs/gfwc100_defconfig b/arch/mips/configs/gfwc100_defconfig
index dcd82e8..7035a58 100644
--- a/arch/mips/configs/gfwc100_defconfig
+++ b/arch/mips/configs/gfwc100_defconfig
@@ -166,10 +166,6 @@
 CONFIG_SERIAL_8250_NR_UARTS=1
 CONFIG_SERIAL_8250_RUNTIME_UARTS=1
 # CONFIG_HW_RANDOM is not set
-CONFIG_I2C=y
-# CONFIG_I2C_COMPAT is not set
-# CONFIG_I2C_HELPER_AUTO is not set
-CONFIG_I2C_GPIO=y
 CONFIG_SPI=y
 CONFIG_SPI_ATH79=y
 CONFIG_GPIO_SYSFS=y
@@ -177,10 +173,7 @@
 CONFIG_WATCHDOG=y
 CONFIG_ATH79_WDT=y
 # CONFIG_HID_SUPPORT is not set
-CONFIG_USB=y
-# CONFIG_USB_DEVICE_CLASS is not set
-CONFIG_USB_EHCI_HCD=y
-CONFIG_USB_EHCI_HCD_PLATFORM=y
+# CONFIG_USB_SUPPORT is not set
 # CONFIG_IOMMU_SUPPORT is not set
 # CONFIG_DNOTIFY is not set
 # CONFIG_PROC_PAGE_MONITOR is not set
@@ -201,6 +194,7 @@
 CONFIG_SQUASHFS_EMBEDDED=y
 CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=1
 # CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_NLS=y
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ISO8859_1=y
 CONFIG_PRINTK_TIME=y