Update setup.py to compile pinmux set pin mode to GPIO

Author: JesseMcL

setup.py

@@ -40,7 +40,7 @@
       classifiers      = classifiers,
       packages         = find_packages(),
       py_modules       = ['Adafruit_I2C'],
-      ext_modules      = [Extension('Adafruit_BBIO.GPIO', ['source/py_gpio.c', 'source/event_gpio.c', 'source/constants.c', 'source/common.c'], extra_compile_args=['-Wno-format-security'], define_macros=kernel41),
+      ext_modules      = [Extension('Adafruit_BBIO.GPIO', ['source/py_gpio.c', 'source/event_gpio.c', 'source/c_pinmux.c', 'source/constants.c', 'source/common.c'], extra_compile_args=['-Wno-format-security'], define_macros=kernel41),
                           Extension('Adafruit_BBIO.PWM', ['source/py_pwm.c', 'source/c_pwm.c', 'source/c_pinmux.c', 'source/constants.c', 'source/common.c'], extra_compile_args=['-Wno-format-security'], define_macros=kernel41),
                           Extension('Adafruit_BBIO.ADC', ['source/py_adc.c', 'source/c_adc.c', 'source/constants.c', 'source/common.c'], extra_compile_args=['-Wno-format-security'], define_macros=kernel41),
                           Extension('Adafruit_BBIO.SPI', ['source/spimodule.c', 'source/constants.c', 'source/common.c'], extra_compile_args=['-Wno-format-security'], define_macros=kernel41),