[openwrt/openwrt] mpc85xx: p2020: fix cfi-nor detection

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch openwrt-21.02:
https://git.openwrt.org/59ba79d675227054f40208b7b0f9102145355bb2

commit 59ba79d675227054f40208b7b0f9102145355bb2
Author: Pawel Dembicki <paweldembicki at gmail.com>
AuthorDate: Mon Jan 11 21:38:22 2021 +0100

    mpc85xx: p2020: fix cfi-nor detection
    
    At this moment p2020rdb has broken images, because NOR memory connected
    to eLBC bus isn't detected.
    
    In 642b1e8dbed7 linux tree commit, config dependencies of MTD_PHYSMAP_OF
    was changed and now MTD_PHYSMAP is required.
    
    This patch adds MTD_PHYSMAP option to kernel config in p2020 subtarget
    and fix booting of p2020rdb.
    
    Fixes: 13b1db795f05 ("mpc85xx: add support for kernel 5.4")
    
    Signed-off-by: Pawel Dembicki <paweldembicki at gmail.com>
    (cherry picked from commit 76649fd06d454f1b93f2ee74951ef91225155a8c)
---
 target/linux/mpc85xx/p2020/config-default | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/linux/mpc85xx/p2020/config-default b/target/linux/mpc85xx/p2020/config-default
index be75f36814..fa43a214cd 100644
--- a/target/linux/mpc85xx/p2020/config-default
+++ b/target/linux/mpc85xx/p2020/config-default
@@ -10,6 +10,7 @@ CONFIG_MTD_CFI=y
 CONFIG_MTD_NAND_BCH=y
 CONFIG_MTD_NAND_ECC_BCH=y
 CONFIG_MTD_NAND_FSL_ELBC=y
+CONFIG_MTD_PHYSMAP=y
 CONFIG_MTD_SPLIT_FIRMWARE=y
 CONFIG_MTD_SPLIT_FIT_FW=y
 CONFIG_MUTEX_SPIN_ON_OWNER=y