[source] imx6: add driver for temp/voltage monitoring

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/0997185ffddf7a596ced2eb56754a628c828056e

commit 0997185ffddf7a596ced2eb56754a628c828056e
Author: Koen Vandeputte <koen.vandeputte at ncentric.com>
AuthorDate: Thu Aug 17 14:22:06 2017 +0200

    imx6: add driver for temp/voltage monitoring
    
    The Gateworks System Controller (GSC) mimics a standard AD7418 device on
    I2C bus 0 at slave 0x29.
    
    Signed-off-by: Koen Vandeputte <koen.vandeputte at ncentric.com>
---
 target/linux/imx6/config-4.9 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/target/linux/imx6/config-4.9 b/target/linux/imx6/config-4.9
index 4d0c04a..e4f262b 100644
--- a/target/linux/imx6/config-4.9
+++ b/target/linux/imx6/config-4.9
@@ -263,6 +263,7 @@ CONFIG_HAVE_SMP=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
 CONFIG_HAVE_UID16=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HWMON=y
 CONFIG_HW_RANDOM=y
 CONFIG_HZ_FIXED=0
 CONFIG_HZ_PERIODIC=y
@@ -323,6 +324,7 @@ CONFIG_MXS_DMA=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NEON=y
 CONFIG_NET_DSA=y
+CONFIG_NET_DSA_HWMON=y
 CONFIG_NET_DSA_MV88E6XXX=y
 CONFIG_NET_DSA_MV88E6XXX_GLOBAL2=y
 CONFIG_NET_DSA_TAG_DSA=y
@@ -416,6 +418,7 @@ CONFIG_RWSEM_SPIN_ON_OWNER=y
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
 # CONFIG_SCHED_INFO is not set
 CONFIG_SCSI=y
+CONFIG_SENSORS_AD7418=y
 CONFIG_SERIAL_8250_FSL=y
 CONFIG_SERIAL_IMX=y
 CONFIG_SERIAL_IMX_CONSOLE=y