[openwrt/openwrt] bcm4908: enable NVMEM U-Boot env data driver

[LEDE Commits]

rmilecki pushed a commit to openwrt/openwrt.git, branch openwrt-21.02:
https://git.openwrt.org/61cf5ab94e4e83ded04f744b6b16a3e9764e97a0

commit 61cf5ab94e4e83ded04f744b6b16a3e9764e97a0
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Wed Aug 17 22:45:11 2022 +0200

    bcm4908: enable NVMEM U-Boot env data driver
    
    It's needed for devices with U-Boot bootloader.
    
    Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
    (cherry picked from commit fb47b9fa1aa760de58f1b43d9f3e654acf1f1671)
---
 target/linux/bcm4908/config-5.4 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/target/linux/bcm4908/config-5.4 b/target/linux/bcm4908/config-5.4
index 4339cd6f9f..a11cfc84ac 100644
--- a/target/linux/bcm4908/config-5.4
+++ b/target/linux/bcm4908/config-5.4
@@ -168,6 +168,9 @@ CONFIG_NET_FLOW_LIMIT=y
 CONFIG_NET_SWITCHDEV=y
 CONFIG_NO_IOPORT_MAP=y
 CONFIG_NR_CPUS=4
+CONFIG_NVMEM=y
+CONFIG_NVMEM_SYSFS=y
+CONFIG_NVMEM_U_BOOT_ENV=y
 CONFIG_OF=y
 CONFIG_OF_ADDRESS=y
 CONFIG_OF_EARLY_FLATTREE=y