Mesa (master): configure: fix test portability

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Module: Mesa
Branch: master
Commit: 021c4961356c4b56b35d34b566e6f5f87d21fe34
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=021c4961356c4b56b35d34b566e6f5f87d21fe34

Author: Maya Rashish <maya at NetBSD.org>
Date:   Thu Jan 10 16:18:48 2019 +0200

configure: fix test portability

>From the bash manual:

string1 == string2
string1 = string2
       True if the strings are equal.  = should be used with the test
       command for POSIX conformance.

---

 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 858da79f4d0..f3c2c3040a1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1922,7 +1922,7 @@ if test x"$enable_dri3" = xyes; then
     dri3_modifier_modules="xcb-dri3 >= $XCBDRI3_MODIFIERS_REQUIRED xcb-present >= $XCBPRESENT_MODIFIERS_REQUIRED"
     PKG_CHECK_MODULES([XCB_DRI3_MODIFIERS], [$dri3_modifier_modules], [have_dri3_modifiers=yes], [have_dri3_modifiers=no])
 
-    if test "x$have_dri3_modifiers" == xyes; then
+    if test "x$have_dri3_modifiers" = xyes; then
         DEFINES="$DEFINES -DHAVE_DRI3_MODIFIERS"
     fi
 fi
@@ -2949,7 +2949,7 @@ if test "x$enable_llvm" = xyes; then
     dnl the LLVM library propagated in the Libs.private of the respective .pc
     dnl file which ensures complete dependency information when statically
     dnl linking.
-    if test "x$enable_glx" == xgallium-xlib; then
+    if test "x$enable_glx" = xgallium-xlib; then
         GL_PC_LIB_PRIV="$GL_PC_LIB_PRIV $LLVM_LIBS"
     fi
     if test "x$enable_gallium_osmesa" = xyes; then