hdmi: slow down to 60 MHz (120 Mbaud, 96 Mbps) for testing

Reduce the output frequency of the HDMI port by a factor of 4, to make
it easier to detect proper connectivity.

fpga/ip/pll.v

@@ -143,7 +143,7 @@ module pll (
 		altpll_component.clk1_duty_cycle = 50,
 		altpll_component.clk1_multiply_by = 7,
 		altpll_component.clk1_phase_shift = "0",
-		altpll_component.clk2_divide_by = 1,
+		altpll_component.clk2_divide_by = 4,
 		altpll_component.clk2_duty_cycle = 50,
 		altpll_component.clk2_multiply_by = 1,
 		altpll_component.clk2_phase_shift = "0",
@@ -232,7 +232,7 @@ endmodule
 // Retrieval info: PRIVATE: DEVICE_SPEED_GRADE STRING "Any"
 // Retrieval info: PRIVATE: DIV_FACTOR0 NUMERIC "2"
 // Retrieval info: PRIVATE: DIV_FACTOR1 NUMERIC "4"
-// Retrieval info: PRIVATE: DIV_FACTOR2 NUMERIC "1"
+// Retrieval info: PRIVATE: DIV_FACTOR2 NUMERIC "4"
 // Retrieval info: PRIVATE: DIV_FACTOR3 NUMERIC "5"
 // Retrieval info: PRIVATE: DIV_FACTOR4 NUMERIC "2"
 // Retrieval info: PRIVATE: DUTY_CYCLE0 STRING "50.00000000"
@@ -242,7 +242,7 @@ endmodule
 // Retrieval info: PRIVATE: DUTY_CYCLE4 STRING "50.00000000"
 // Retrieval info: PRIVATE: EFF_OUTPUT_FREQ_VALUE0 STRING "168.000000"
 // Retrieval info: PRIVATE: EFF_OUTPUT_FREQ_VALUE1 STRING "84.000000"
-// Retrieval info: PRIVATE: EFF_OUTPUT_FREQ_VALUE2 STRING "48.000000"
+// Retrieval info: PRIVATE: EFF_OUTPUT_FREQ_VALUE2 STRING "12.000000"
 // Retrieval info: PRIVATE: EFF_OUTPUT_FREQ_VALUE3 STRING "134.399994"
 // Retrieval info: PRIVATE: EFF_OUTPUT_FREQ_VALUE4 STRING "168.000000"
 // Retrieval info: PRIVATE: EXPLICIT_SWITCHOVER_COUNTER STRING "0"
@@ -362,7 +362,7 @@ endmodule
 // Retrieval info: CONSTANT: CLK1_DUTY_CYCLE NUMERIC "50"
 // Retrieval info: CONSTANT: CLK1_MULTIPLY_BY NUMERIC "7"
 // Retrieval info: CONSTANT: CLK1_PHASE_SHIFT STRING "0"
-// Retrieval info: CONSTANT: CLK2_DIVIDE_BY NUMERIC "1"
+// Retrieval info: CONSTANT: CLK2_DIVIDE_BY NUMERIC "4"
 // Retrieval info: CONSTANT: CLK2_DUTY_CYCLE NUMERIC "50"
 // Retrieval info: CONSTANT: CLK2_MULTIPLY_BY NUMERIC "1"
 // Retrieval info: CONSTANT: CLK2_PHASE_SHIFT STRING "0"