[PATCH] openchrome: Do not require libdrm

[Samuel Thibault]

We can build without it.

Proper non-fatal finer libdrm detection is already done below this.

Signed-off-by: Samuel Thibault <samuel.thibault at ens-lyon.org>

diff --git a/configure.ac b/configure.ac
index b13cb2c..9e77dc8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -80,7 +80,7 @@ XORG_DRIVER_CHECK_EXT(XF86DRI, xextproto x11)
 XORG_DRIVER_CHECK_EXT(DPMSExtension, xextproto)
 
 # Checks for pkg-config packages
-PKG_CHECK_MODULES(XORG, [xorg-server xproto fontsproto libdrm glproto $REQUIRED_MODULES])
+PKG_CHECK_MODULES(XORG, [xorg-server xproto fontsproto glproto $REQUIRED_MODULES])
 PKG_CHECK_MODULES(XEXT, [xextproto >= 7.0.99.1],
  HAVE_XEXTPROTO_71="yes"; AC_DEFINE(HAVE_XEXTPROTO_71, 1, [xextproto 7.1 available]),
  HAVE_XEXTPROTO_71="no")