[PATCH] docs: Makefile: honor V=0 for docs building

[Mauro Carvalho Chehab]

Reduce the number of displayed mesages when building the
docs with V=0.

Suggested-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 Documentation/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 6a59a13d3c53..61a7310b49e0 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -26,6 +26,10 @@ BUILDDIR      = $(obj)/output
 PDFLATEX      = xelatex
 LATEXOPTS     = -interaction=batchmode
 
+ifeq ($(KBUILD_VERBOSE),0)
+SPHINXOPTS    += "-q"
+endif
+
 # User-friendly check for sphinx-build
 HAVE_SPHINX := $(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi)
 
-- 
2.26.2