[source] mxs: enable nvmem support

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/e690280a160229be31906806583e8e9442d5b365

commit e690280a160229be31906806583e8e9442d5b365
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Fri Feb 10 10:52:31 2017 +0100

    mxs: enable nvmem support
    
    fixes build error due to missing kernel config options
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 target/linux/mxs/config-4.4 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/linux/mxs/config-4.4 b/target/linux/mxs/config-4.4
index 6723f05..b1a459d 100644
--- a/target/linux/mxs/config-4.4
+++ b/target/linux/mxs/config-4.4
@@ -212,6 +212,8 @@ CONFIG_NEED_PER_CPU_KM=y
 CONFIG_NET_PTP_CLASSIFY=y
 CONFIG_NLS=y
 CONFIG_NO_BOOTMEM=y
+CONFIG_NVMEM=y
+CONFIG_NVMEM_MXS_OCOTP=y
 CONFIG_OF=y
 CONFIG_OF_ADDRESS=y
 CONFIG_OF_EARLY_FLATTREE=y