git clone --depth=1 https://github.com/hardkernel/linux.git -b odroidc-3.10.y

cd linux
export ARCH=arm
export CROSS_COMPILE=arm-none-linux-gnueabi-

make odroidc_defconfig 

edit .config 
CONFIG_CFG80211=y

make -j20


unzip RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911.zip 
# dig out the driver source
mv RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911/driver/rtl8188C_8192C_usb_linux_v4.0.2_9000.20130911.tar.gz .
# clean up the stuff we don't care about
rm -rf RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911
# expand the driver source
tar -xf rtl8188C_8192C_usb_linux_v4.0.2_9000.20130911.tar.gz
# give the directory a friendlier name
mv rtl8188C_8192C_usb_linux_v4.0.2_9000.20130911 realtek-8192cu

# pick up the patches
cd realtek-8192cu/
tar -xzf ../patches.tgz


CONFIG_IOCTL_CFG80211

I still get this:
WARNING: "cfg80211_inform_bss_frame" [/export/work/odroidc1/realtek-8192cu/8192cu.ko] undefined!
WARNING: "cfg80211_del_sta" [/export/work/odroidc1/realtek-8192cu/8192cu.ko] undefined!
WARNING: "wiphy_new" [/export/work/odroidc1/realtek-8192cu/8192cu.ko] undefined!
  CC      /export/work/odroidc1/realtek-8192cu/8192cu.mod.o
  LD [M]  /export/work/odroidc1/realtek-8192cu/8192cu.ko
make[1]: Leaving directory `/export/work/odroidc1/linux'