kbuild: refactor some makefiles
[1] Move driver/core/, driver/input/ and drivers/input/ entries
from the top Makefile to drivers/Makefile
[2] Remove the conditional by CONFIG_DM in drivers/core/Makefile
because the whole drivers/core directory is already selected
by CONFIG_DM in the upper level
[3] Likewise for CONFIG_DM_DEMO in drivers/demo/Makefile
[4] Simplify common/Makefile - both CONFIG_DDR_SPD and
CONFIG_SPD_EEPROM are boolean macros so they can directly
select objects
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/core/Makefile b/drivers/core/Makefile
index 90b2a7f..c7905b1 100644
--- a/drivers/core/Makefile
+++ b/drivers/core/Makefile
@@ -4,4 +4,4 @@
# SPDX-License-Identifier: GPL-2.0+
#
-obj-$(CONFIG_DM) := device.o lists.o root.o uclass.o util.o
+obj-y := device.o lists.o root.o uclass.o util.o