Renaming ubifs-workaround flag to jffs-workaround

Changes:
Renaming the ubifs-workaround flag to jffs-workaround.
Default behaviour is IN_CREATE, if jffs-workaround is enabled
will monitor for IN_CLOSE_WRITE.

Test:
Tested the fix on romulus i.e. jffs2, ext4 and ubifs. The core file
is getting transferred to dump folder.
Also did full build for jffs and ext4 fs.

Change-Id: I964f5923ad73926db214526aa6c62fca9ac90ba8
Signed-off-by: Chirag Sharma <chirshar@in.ibm.com>
diff --git a/meson_options.txt b/meson_options.txt
index 1f25560..de4a7ee 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -4,8 +4,8 @@
 
 option('oe-sdk', type: 'feature', description: 'Enable OE SDK')
 
-option('ubifs-workaround', type: 'feature',
-        description : 'Turn on ubi workaround for core file'
+option('jffs-workaround', type: 'feature',
+        description : 'Turn on jffs workaround for core file'
       )
 
 option('DUMP_BUSNAME', type : 'string',