Power up U1 PAC1954 by default

Previously it was (probably but not guaranteed to be) powered down until
after FPGA configuration, but it is potentially useful to have it start
collecting measurement data immediately when the board powers on.

cynthion.kicad_pcb

@@ -15639,10 +15639,9 @@
     (at 136.8 110.3 90)
     (descr "Resistor SMD 0402 (1005 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator")
     (tags "resistor")
-    (property "DNP" "DNP")
-    (property "Description" "RES 10K OHM 5% 1/16W 0402")
+    (property "Description" "RES 5.1K OHM 5% 1/16W 0402")
     (property "Manufacturer" "Yageo")
-    (property "Part Number" "RC0402JR-0710KL")
+    (property "Part Number" "RC0402JR-075K1L")
     (property "Sheetfile" "power_distribution.kicad_sch")
     (property "Sheetname" "Power Distribution and Monitoring")
     (property "Substitution" "any equivalent")
@@ -15654,7 +15653,7 @@
         (effects (font (size 1 1) (thickness 0.15)) (justify mirror))
       (tstamp b64aff16-4ad7-41ec-844e-6deaf0a470f6)
     )
-    (fp_text value "10k" (at 0 -1.17 90) (layer "B.Fab") hide
+    (fp_text value "5.1k" (at 0 -1.17 90) (layer "B.Fab") hide
         (effects (font (size 1 1) (thickness 0.15)) (justify mirror))
       (tstamp c48e566b-8f85-4627-a1c1-6f91d73d9786)
     )

power_distribution.kicad_sch

@@ -4113,7 +4113,7 @@
     (property "Reference" "R87" (at 154.5047 168.148 0)
       (effects (font (size 1.27 1.27)) (justify left))
     )
-    (property "Value" "10k" (at 151.9678 168.148 0)
+    (property "Value" "5.1k" (at 151.9678 168.148 0)
       (effects (font (size 1.27 1.27)) (justify left))
     )
     (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (at 153.67 164.592 90)
@@ -4122,21 +4122,18 @@
     (property "Datasheet" "~" (at 153.67 166.37 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Part Number" "RC0402JR-0710KL" (at 153.67 166.37 0)
+    (property "Part Number" "RC0402JR-075K1L" (at 153.67 166.37 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (property "Substitution" "any equivalent" (at 153.67 166.37 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Description" "RES 10K OHM 5% 1/16W 0402" (at 153.67 166.37 0)
+    (property "Description" "RES 5.1K OHM 5% 1/16W 0402" (at 153.67 166.37 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (property "Manufacturer" "Yageo" (at 153.67 166.37 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "DNP" "DNP" (at 156.845 170.18 0)
-      (effects (font (size 1.27 1.27)))
-    )
     (pin "1" (uuid 2d0a61bf-f3e4-4c37-94ab-aecdac4e4f04))
     (pin "2" (uuid 1a0f3951-b11c-4116-a0ec-a853e9aa8c50))
     (instances