staging: kpc2000: kpc_i2c: reindent i2c_driver.c

i2c_driver.c uses a mixture of space and tab indentations which
conflicts with the kernel coding style guide. Reindent i2c_driver.c.

Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>