Convert SAM drivers to DT_INST

[galak]

No description provided.

[galak]

Moved the commits related to SAM into one PR, so easier to get review that way.

[galak]

TODO:
drivers/adc/adc_sam0.c
drivers/adc/adc_sam_afec.c
drivers/counter/counter_sam0_tc32.c
drivers/flash/flash_sam.c
drivers/gpio/gpio_sam0.c
drivers/gpio/gpio_sam.c
drivers/hwinfo/hwinfo_sam.c
drivers/i2c/i2c_sam0.c
drivers/i2c/i2c_sam_twi.c
drivers/i2c/i2c_sam_twihs.c
drivers/pinmux/pinmux_sam0.c
drivers/serial/Kconfig.sam0
drivers/serial/uart_sam0.c
drivers/serial/uart_sam.c
drivers/serial/usart_sam.c
drivers/spi/spi_sam0.c
drivers/spi/spi_sam.c
drivers/usb/device/usb_dc_sam.c

[mnkp]

Looks good, though I believe it is too early to convert all remaining SAM drivers to DT_INST. This family requires pinctrl data to be provided by DTS. For now we could convert watchdog, as this PR proposes, GPIO and counter. Any driver that doesn't require pinctlr.

[galak]

Looks good, though I believe it is too early to convert all remaining SAM drivers to DT_INST. This family requires pinctrl data to be provided by DTS. For now we could convert watchdog, as this PR proposes, GPIO and counter. Any driver that doesn't require pinctlr.

Going to handle this with a mix of DT_INST and DT_NODELABEL. Once NODELABEL is in place I'll work up a PR to show the mix of pinctrl + driver.

[mnkp]

I haven't done full review before, I was under impression that more drivers will be added to this PR. The two commits converting watchdog and entropy drivers look good.

[galak]

I haven't done full review before, I was under impression that more drivers will be added to this PR. The two commits converting watchdog and entropy drivers look good.

I was thinking its best to merge and close out the PRs for the easy stuff and than have follow on PRs. Was thinking this was going to go faster, and thus the previous model that you are thinking about.