[topic-gpio] samples: lcd_hd44780: Convert to new GPIO API

[carlescufi]

Convert to the new API, using raw access since there is no Device-Tree
definitions for this particular sample.

Signed-off-by: Carles Cufi [email protected]

[carlescufi]

Untested, I don't have the hardware.

[zephyrbot]

All checks passed.

checkpatch (informational only, not a failure)

-:10: WARNING:LONG_LINE: line over 80 characters
#10: FILE: samples/drivers/lcd_hd44780/src/main.c:143:
+		if (gpio_pin_set_raw((dev), (pin), (bit))) {			\

- total: 0 errors, 1 warnings, 34 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Your patch has style problems, please review.

NOTE: Ignored message types: AVOID_EXTERNS BRACES CONFIG_EXPERIMENTAL CONST_STRUCT DATE_TIME FILE_PATH_CHANGES MINMAX NETWORKING_BLOCK_COMMENT_STYLE PRINTK_WITHOUT_KERN_LEVEL SPLIT_STRING VOLATILE

NOTE: If any of the errors are false positives, please report
      them to the maintainers.

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