webos-filesystem-paths: Add locations of fonts and SmartKey data

:Release Notes:
Add webos_fontsdir and webos_smartkeydatadir variables.

:Detailed Notes:

:Testing Performed:
The output from
  $ make BBFLAGS=-e pmloglib \
    | egrep 'export webos_(fonts|smartkeydata)dir'
shows that the variables have been set correctly.

:QA Notes:

:Build Notes:
This commit invalidates all shared state.

:Issues Addressed:
[GF-42606] Ongoing metadata improvement/cleanup work

Open-webOS-DCO-1.0-Signed-off-by: Herb Kuta <herb.kuta@lge.com>
Change-Id: I2f05bf9bfc65f001b379ae542cb41babc55e93a1
Reviewed-on: https://g2g.palm.com/3899
Build: Herb Kuta <herb.kuta@lge.com>
Tested-by: Herb Kuta <herb.kuta@lge.com>
Reviewed-by: Iyad Qumei <iyad.qumei@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>