Update file mainlining.rst

mainlining.rst

@@ -37,7 +37,11 @@ v6.7 (work in progress)
   - MEDIA_CEC_SUPPORT=y & CEC_MESON_G12A_AO=m to enable the CEC bus
   - RTC_DRV_PCF8563=m to enable support for RTC on most SBC boards
   - VIDEO_MESON_VDEC=m to enable HW Video Decoder
-  - MESON_DDR_PMU=m to enable DDR PMU perf driver on G12A & SM1 SoCs 
+  - MESON_DDR_PMU=m to enable DDR PMU perf driver on G12A & SM1 SoCs
+
+Clocks
+
+  - Add s4 main clock controller support
 
 v6.6 (work in progress)
 ~~~~~~~~~~~~~~~~~~~~~~~