[Skiboot] [PATCH 1/2] doc/vpd: Improve documentation

[Neelesh Gupta]

Mention that the vpd document is applicable for FSP-based systems.

Signed-off-by: Neelesh Gupta <neelegup at linux.vnet.ibm.com>
---
 doc/device-tree/vpd.txt |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/device-tree/vpd.txt b/doc/device-tree/vpd.txt
index 949ee0b..71c2e61 100644
--- a/doc/device-tree/vpd.txt
+++ b/doc/device-tree/vpd.txt
@@ -2,7 +2,10 @@ VPD (Vital Product Data)
 ------------------------
 
 VPD provides the information about the FRUs (Field Replaceable Unit) present in
-the system. Each vpd node represents a FRU, having properties as below.
+the system and each vpd node in the device tree represents a FRU. These node and
+their properties are specific to the FSP-based systems, passed to the skiboot in
+the form of FSP-defined HDAT structures. skiboot parses these structures and
+add respective nodes in the device tree.
 
 /vpd			: VPD root node
 <fru-name>@<rsrc-id>	: Node name