spirv-tools: correctly set PV

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/recipes-graphics/spir/spirv-tools_git.bb b/meta/recipes-graphics/spir/spirv-tools_2019.5.bb
similarity index 100%
rename from meta/recipes-graphics/spir/spirv-tools_git.bb
rename to meta/recipes-graphics/spir/spirv-tools_2019.5.bb