Load fb module before glamoregl/shadow modules

Fixes unresolved symbols on some systems.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93105
(ported from radeon commit 78fbca095ae9887a2d3de48bb07975e2d1126e68)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

src/amdgpu_kms.c

@@ -798,6 +798,10 @@ Bool AMDGPUPreInit_KMS(ScrnInfoPtr pScrn, int flags)
 		goto fail;
 	}
 
+	/* Get ScreenInit function */
+	if (!xf86LoadSubModule(pScrn, "fb"))
+		return FALSE;
+
 	if (!AMDGPUPreInitAccel_KMS(pScrn))
 		goto fail;
 
@@ -883,10 +887,6 @@ Bool AMDGPUPreInit_KMS(ScrnInfoPtr pScrn, int flags)
 	/* Set display resolution */
 	xf86SetDpi(pScrn, 0, 0);
 
-	/* Get ScreenInit function */
-	if (!xf86LoadSubModule(pScrn, "fb"))
-		return FALSE;
-
 	if (!xf86SetGamma(pScrn, zeros))
 		return FALSE;