reads
#define GPIO0_CONF (PIN_FUNC_SELECT(GPIO0_MUX, FUNC_GPIO0))
but should probably read
#define GPIO0_CONF PIN_FUNC_SELECT(GPIO0_MUX, FUNC_GPIO0)
like all others do?

small typo:

define GPIO13_CONF PIN_FUNC_SELECT(,GPIO13_MUX FUNC_GPIO13)

should be

define GPIO13_CONF PIN_FUNC_SELECT(GPIO13_MUX, FUNC_GPIO13)

When accessing e.g. GPIO12_IN, I receive the following error:
right shift count >= width of type [-Werror]
#define BIT12 0x00001000
^

I guess GPIO12_IN (and others) should read
#define GPIO12_IN (GPIO_INPUT_GET(12))
instead of
#define GPIO12_IN (GPIO_INPUT_GET(BIT12))
?