[XS] Change in coreboot[main]: util/kconfig: Import some more of Linux's build infra

[Felix Singer (Code Review)]

Felix Singer has submitted this change. ( https://review.coreboot.org/c/coreboot/+/79264?usp=email )

Change subject: util/kconfig: Import some more of Linux's build infra
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util/kconfig: Import some more of Linux's build infra

cmd and cmd_conf_cfg are necessary for `make menuconfig`
and `make nconfig`.

Change-Id: Ie16ef31a8e0137f3fd4129fb73ca6ef4669173cc
Signed-off-by: Patrick Georgi 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79264
Reviewed-by: Mike Banon 
Reviewed-by: Matt DeVillier 
Reviewed-by: Felix Singer 
Reviewed-by: Nico Huber 
Tested-by: build bot (Jenkins) 
Reviewed-by: Martin L Roth 
---
M util/kconfig/Makefile.inc
1 file changed, 3 insertions(+), 0 deletions(-)

Approvals:
  Nico Huber: Looks good to me, but someone else must approve
  Mike Banon: Looks good to me, but someone else must approve
  Felix Singer: Looks good to me, approved
  Matt DeVillier: Looks good to me, approved
  build bot (Jenkins): Verified
  Martin L Roth: Looks good to me, approved

diff --git a/util/kconfig/Makefile.inc b/util/kconfig/Makefile.inc
index 0614bb0..3a9f353 100644
--- a/util/kconfig/Makefile.inc
+++ b/util/kconfig/Makefile.inc
@@ -25,6 +25,9 @@

kecho := echo

+cmd = $(cmd_$(1))
+cmd_conf_cfg = $< $(addprefix $(obj)/$*conf-, cflags libs bin); touch $(obj)/$*conf-bin
+
 ###
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