[PATCH] ARM: shmobile: defconfig: Restore debugfs support

[Geert Uytterhoeven <geert+renesas@xxxxxxxxx>]

Since commit 0e4a459f56c32d3e ("tracing: Remove unnecessary DEBUG_FS
dependency"), CONFIG_DEBUG_FS is no longer auto-enabled.  This breaks
booting Debian 9, as systemd needs debugfs:

    [FAILED] Failed to mount /sys/kernel/debug.
    See 'systemctl status sys-kernel-debug.mount' for details.
    [DEPEND] Dependency failed for Local File Systems.
    ...
    You are in emergGive root password for maintenance
    (or press Control-D to continue):

Fix this by enabling CONFIG_DEBUG_FS explicitly.

See also commit 18977008f44c66bd ("ARM: multi_v7_defconfig: Restore
debugfs support").

Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
To be queued as a fix for v5.5.
---
 arch/arm/configs/shmobile_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/shmobile_defconfig b/arch/arm/configs/shmobile_defconfig
index 7f0985e023313b57..64fa849f8bbe0617 100644
--- a/arch/arm/configs/shmobile_defconfig
+++ b/arch/arm/configs/shmobile_defconfig
@@ -215,4 +215,5 @@ CONFIG_DMA_CMA=y
 CONFIG_CMA_SIZE_MBYTES=64
 CONFIG_PRINTK_TIME=y
 # CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_DEBUG_FS=y
 CONFIG_DEBUG_KERNEL=y
-- 
2.17.1