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/icE1usb/rtl/sysmgr.v b/gateware/icE1usb/rtl/sysmgr.v
index 6ae9721..5352d01 100644
--- a/gateware/icE1usb/rtl/sysmgr.v
+++ b/gateware/icE1usb/rtl/sysmgr.v
@@ -33,10 +33,10 @@
 
 	// Global input buffer for 30.72 MHz clock
 	SB_GB_IO #(
-		.PIN_TYPE(6'b000001),
+		.PIN_TYPE(6'b000001)
 	) gb_in (
 		.PACKAGE_PIN(clk_in),
-		.GLOBAL_BUFFER_OUTPUT(clk_30m72_i),
+		.GLOBAL_BUFFER_OUTPUT(clk_30m72_i)
 	);
 
 	// PLL instance
@@ -50,7 +50,7 @@
 		.FDA_FEEDBACK(4'b0000),
 		.SHIFTREG_DIV_MODE(2'b00),
 		.PLLOUT_SELECT("GENCLK"),
-		.ENABLE_ICEGATE(1'b0),
+		.ENABLE_ICEGATE(1'b0)
 	) pll_I (
 		.REFERENCECLK(clk_30m72_i),
 		.PLLOUTCORE(),