Invalid usage of k_busy_wait()

[pizi-nordic]

Describe the bug
Most of the timing APIs in Zephyr uses ms as a time unit. There are also several macros, which converts other time units to milliseconds. However the k_busy_wait() uses us as a unit, so all these helpers cannot be directly used with this call. Unfortunately this subtle difference is missed in few places in Zephyr.

• drivers/display/ssd1673.c: k_busy_wait(SSD1673_BUSY_DELAY);
  The SSD1673_BUSY_DELAY is specified in ms according to comment before this define.
• tests/kernel/interrupt/src/nested_irq.c: k_busy_wait(K_SECONDS(..));
  (refereed in tests/kernel/interrupt is failing on NRFx boards #10509)
• drivers/wifi/winc1500/wifi_winc1500_nm_bsp.c: k_busy_wait(u32TimeMsec * MSEC_PER_SEC)
  This one works as expected, but IMHO should be corrected.

[nashif]

• drivers/display/ssd1673.c: k_busy_wait(SSD1673_BUSY_DELAY);
  The SSD1673_BUSY_DELAY is specified in ms according to comment before this define.

was fixed by d0afacc