since this config is removed from: commit a446b5816f8159f134730e1d8fedc5984ced874b Author: Xiang Xiao <xiaoxiang@xiaomi.com> Date: Sun Nov 6 00:18:52 2022 +0800 mm/circbuf: Remove MM_CIRCBUF option from Kconfig since the linker can remove the unused object file from the final image Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>