gateware: Minor syntax fixes

Theses syntax error are ignored by yosys but trying synopsys, it is more
strict, so fix them. Right thing to do anyway ...

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/gateware/e1-tracer/rtl/sysmgr.v b/gateware/e1-tracer/rtl/sysmgr.v
index b5dbb3c..643945e 100644
--- a/gateware/e1-tracer/rtl/sysmgr.v
+++ b/gateware/e1-tracer/rtl/sysmgr.v
@@ -37,7 +37,7 @@
 		.PIN_TYPE(6'b000001)
 	) gb_in (
 		.PACKAGE_PIN(clk_in),
-		.GLOBAL_BUFFER_OUTPUT(clk_12m_i),
+		.GLOBAL_BUFFER_OUTPUT(clk_12m_i)
 	);
 
 	// PLL instance