The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/80e8d09cd0f256102ef7ce60150b3cf708e9c2e1

commit 80e8d09cd0f256102ef7ce60150b3cf708e9c2e1
Author: Guenter Roeck <groeck@chromium.org>
Date: Fri Apr 20 04:59:14 2018

FROMLIST: soc: Unconditionally include qcom Makefile

Incoming Qualcomm changes for GENI, i2c [1], and cmd-db [2] are enabled
with COMPILE_TEST in drivers/soc/qcom. For this to work, the Makefile
in that directory has to be included unconditionally, rather than only
if ARCH_QCOM is enabled.

Example of the errors seen on allmodconfig with the GENI, i2c, and
cmd-db patches applied:

Kernel: arch/x86/boot/bzImage is ready  (#1)
ERROR: "geni_se_select_mode" [drivers/tty/serial/qcom_geni_serial.ko] undefined!
ERROR: "geni_se_init" [drivers/tty/serial/qcom_geni_serial.ko] undefined!
ERROR: "geni_se_config_packing" [drivers/tty/serial/qcom_geni_serial.ko] undefined!
ERROR: "geni_se_resources_on" [drivers/tty/serial/qcom_geni_serial.ko] undefined!
ERROR: "geni_se_resources_off" [drivers/tty/serial/qcom_geni_serial.ko] undefined!
ERROR: "geni_se_tx_dma_unprep" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_tx_dma_prep" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_rx_dma_unprep" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_rx_dma_prep" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_select_mode" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_config_packing" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_init" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_resources_off" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
ERROR: "geni_se_resources_on" [drivers/i2c/busses/i2c-qcom-geni.ko] undefined!
make[1]: *** [scripts/Makefile.modpost:92: __modpost] Error 1
make: *** [Makefile:1237: modules] Error 2

[1] https://patchwork.ozlabs.org/cover/893437/
[2] https://lkml.org/lkml/2018/4/10/714

Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

BUG= chromium:834353 
TEST=Build and boot

Change-Id: Ia69900e1296c1347c67fc3e84438809ed7708ac8
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(am from https://patchwork.kernel.org/patch/10348999/)
Reviewed-on: https://chromium-review.googlesource.com/1017229
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Evan Green <evgreen@chromium.org>

[modify] https://crrev.com/80e8d09cd0f256102ef7ce60150b3cf708e9c2e1/drivers/soc/Makefile