dt-bindings: bus: ti-sysc: fix typo

Fix typo (period vs comma) in list of valid clock names.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230620200917.24958-1-mans@mansr.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/bus/ti-sysc.yaml

@@ -97,7 +97,7 @@ properties:
       - enum: [ ick, fck, sys_clk ]
       - items:
           - const: fck
-          - enum: [ ick. dbclk, osc, sys_clk, dss_clk, ahclkx ]
+          - enum: [ ick, dbclk, osc, sys_clk, dss_clk, ahclkx ]
       - items:
           - const: fck
           - const: phy-clk