[source] mvebu: fix boot stalls on WRT1900AC V1

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/?p=source.git;a=commitdiff;h=18eebfe4e5756bc33b8f04c73477bdb1c1fcb7ee

commit 18eebfe4e5756bc33b8f04c73477bdb1c1fcb7ee
Author: John Crispin <john at phrozen.org>
AuthorDate: Thu Aug 18 09:38:26 2016 +0200

    mvebu: fix boot stalls on WRT1900AC V1
    
    Signed-off-by: John Crispin <john at phrozen.org>
---
 target/linux/mvebu/config-4.4 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/linux/mvebu/config-4.4 b/target/linux/mvebu/config-4.4
index f5b2346..604fbc8 100644
--- a/target/linux/mvebu/config-4.4
+++ b/target/linux/mvebu/config-4.4
@@ -209,6 +209,7 @@ CONFIG_HAVE_UID16=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
 CONFIG_HIGHMEM=y
 # CONFIG_HIGHPTE is not set
+CONFIG_HOTPLUG_CPU=y
 CONFIG_HWBM=y
 CONFIG_HWMON=y
 CONFIG_HZ_FIXED=0