Users needing it with the dectlk synth report that a 100ms flush delay
is still noticeable and prefer to set it to e.g. 10ms. This leaves the
default to 4000ms (since hitting it is a sign that the cable is faulty
and should be replaced), but allows to set it as short as 10ms.

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

diff --git a/drivers/accessibility/speakup/synth.c b/drivers/accessibility/speakup/synth.c
index 2b8699673bac..eea2a2fa4f01 100644
--- a/drivers/accessibility/speakup/synth.c
+++ b/drivers/accessibility/speakup/synth.c
@@ -348,7 +348,7 @@ struct var_t synth_time_vars[] = {
 	{ TRIGGER, .u.n = {NULL, 20, 10, 2000, 0, 0, NULL } },
 	{ JIFFY, .u.n = {NULL, 50, 20, 200, 0, 0, NULL } },
 	{ FULL, .u.n = {NULL, 400, 200, 60000, 0, 0, NULL } },
-	{ FLUSH, .u.n = {NULL, 4000, 100, 4000, 0, 0, NULL } },
+	{ FLUSH, .u.n = {NULL, 4000, 10, 4000, 0, 0, NULL } },
 	V_LAST_VAR
 };