There isn't any driver for hx8347G available, but you can use the existent async driver for epson display as a base for your driver development.
On kernel menuconfig, you can find it at:
-> Device Drivers
-> Graphics support
-> MXC Framebuffer support
-> Asynchronous Panels
-> Asynchronous Panel Type
[ ] Epson 176x220 Panel
The source code file is:
linux/drivers/video/mxc/mxcfb_epson.c
Rgds
Rogerio