[PATCH] build: Scope RTEMS_MULTIPROCESSING option

[Sebastian Huber]

Enable it only for selected BSPs. Improve description.
---
 spec/build/cpukit/optmpci.yml | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/spec/build/cpukit/optmpci.yml b/spec/build/cpukit/optmpci.yml
index cf72cf4b6e..8cac36c4d3 100644
--- a/spec/build/cpukit/optmpci.yml
+++ b/spec/build/cpukit/optmpci.yml
@@ -9,8 +9,19 @@ copyrights:
 default: false
 default-by-variant: []
 description: |
-  Enable the message passing based multiprocessing support (MPCI); do not confuse this with the SMP support
-enabled-by: true
+  If set to "True", then the message passing based multiprocessing support
+  (MPCI) is enabled, otherwise it is disabled.  Do not confuse this with the
+  SMP support which is enabled by the RTEMS_SMP option.
+enabled-by:
+- m68k/mvme147s
+- powerpc/psim
+- powerpc/qoriq_core_0
+- powerpc/qoriq_core_1
+- sparc/gr712rc
+- sparc/gr740
+- sparc/leon3
+- sparc/ut699
+- sparc/ut700
 links: []
 name: RTEMS_MULTIPROCESSING
 type: build
-- 
2.26.2