stm32f0: timers: input capture support rising/falling edges

This is common code for f0234, keep renaming files as has become standard, even
if it's a suboptimal solution.  This doesn't rename the header which was not
renamed for f3.

Reported-by: https://github.com/gtoonstra

lib/stm32/f0/Makefile

@@ -42,7 +42,7 @@ OBJS            += gpio_common_all.o gpio_common_f0234.o crc_common_all.o \
                    pwr_common_all.o iwdg_common_all.o rtc_common_l1f024.o \
                    dma_common_l1f013.o exti_common_all.o spi_common_all.o \
 		   spi_common_f03.o flash_common_f01.o dac_common_all.o \
-		   timer_common_all.o rcc_common_all.o
+		   timer_common_all.o timer_common_f0234.o rcc_common_all.o
 OBJS		+= adc_common_v2.o
 OBJS		+= crs_common_all.o
 OBJS		+= usart_common_v2.o