Change in coreboot[master]: soc/mediatek: make sure force hsa hsa hfp packet multiple of line_num

[Chen-Tsung Hsieh (Code Review)]

Attention is currently required from: Hung-Te Lin, jitao shi, Yu-Ping Wu.
Chen-Tsung Hsieh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51434 )

Change subject: soc/mediatek: make sure force hsa hsa hfp packet multiple of line_num
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Patch Set 1:

(1 comment)

File src/soc/mediatek/common/dsi.c:

https://review.coreboot.org/c/coreboot/+/51434/comment/4036fe1a_e946ca2d 
PS1, Line 243: ((hsync_active_byte + lanes - 1) / lanes)
Please use DIV_ROUND_UP(hsync_active_byte, lanes) as Yuping indecated in https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+....

There is no ROUND_UP in coreboot, but "DIV_ROUND_UP(hsync_active_byte, lanes) * lines" works as ROUND_UP.