2-line DT-compat add to rockchip_board_dt_compat[] (rv1103 + rv1106), per the
breadth survey. Did NOT recreate the dropped CPU_RV1106 symbol (mainline IDs the
SoC purely via DT compat at runtime). clk + pinctrl + mach = the 3 core compile
components; DT + defconfig + full build remain for M2 (console boot).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
