src: use ARRAY_SIZE where possible

Generated with a variant of
https://coccinelle.gitlabpages.inria.fr/website/rules/array.cocci

Change-Id: I083704fd48faeb6c67bba3367fbcfe554a9f7c66
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50594
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/qualcomm/sc7180/display/dsi_phy.c b/src/soc/qualcomm/sc7180/display/dsi_phy.c
index 050a5d8..db4b67c 100644
--- a/src/soc/qualcomm/sc7180/display/dsi_phy.c
+++ b/src/soc/qualcomm/sc7180/display/dsi_phy.c
@@ -564,7 +564,7 @@
 
 	/* D Phy */
 	lut = pll_dividerlut_dphy;
-	lut_max = sizeof(pll_dividerlut_dphy) / sizeof(*lut);
+	lut_max = ARRAY_SIZE(pll_dividerlut_dphy);
 	lut += (lut_max - 1);
 
 	/* PLL Post Div - from LUT