linuxkpi: i2c: Add MODULE_DEPEND for iicbus

MFC after: 1 month
MFC with: 1961a14a4743
Fixes: 1961a14a4743 ("linuxkpi: Add i2c support")
Reported by: GregV
Sponsored by: Beckhoff Automation GmbH & Co. KG

(cherry picked from commit 81de556105b2fb0f85ece868b2289c53b8c3e6ca)