clk: gxbb: fix CLKID_ETH defined twice

CLKID_ETH is define in the dt-bindings but has not be commented out in the
clock driver. Just do it now.

Fixes: 738f66d3211d ("clk: gxbb: add AmLogic GXBB clk controller driver")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

drivers/clk/meson/gxbb.h

@@ -204,7 +204,7 @@
 #define CLKID_ASSIST_MISC	  33
 /* CLKID_SPI */
 #define CLKID_I2S_SPDIF		  35
-#define CLKID_ETH		  36
+/* CLKID_ETH */
 #define CLKID_DEMUX		  37
 #define CLKID_AIU_GLUE		  38
 #define CLKID_IEC958		  39