Chipyard 1.9.1

This release fixes several bugs introduced with the 1.9.0 release.

What's Changed

• Various improvements and fixes by @jerryz123 in #1420
• Ensure conda cleanup regex properly filters out non-numeric chars by @abejgonzalez in #1425
• QoL improvement to IOBinders + custom ChipTop example by @jerryz123 in #1399
• New Scala-based Config Finder by @abejgonzalez in #1424
• Bump to latest rocket-chip/chisel3.5.6 by @jerryz123 in #1411
• Resolve merge conflicts in chisel3.5.6 bump by @jerryz123 in #1430
• PLL integration example + FlatChipTop/TestHarness by @jerryz123 in #1427
• bump testchipip by @joey0320 in #1434
• ADD: improve Makefile in tests/, add explicit arch flags by @T-K-233 in #1439
• Fix ChipLikeQuadRocketConfig crossing by @jerryz123 in #1436
• Bump TestChipIp to improve default serial_tl behavior by @jerryz123 in #1435
• Bump testchipip to standardize TL serdesser bundle params by @jerryz123 in #1446
• Add mt-helloworld example by @jerryz123 in #1428
• Clear screen on prompt by @abejgonzalez in #1449
• Add tutorial software by @abejgonzalez in #1447
• Bump to Hammer 1.1.1 by @harrisonliew in #1451
• Uniquify module names that are common to Top & Model by @joey0320 in #1442
• Use pk/encoding.h for hello/mt-hello by @jerryz123 in #1454
• Fix no-uart configs by @jerryz123 in #1457
• Fix support for no-bootROM systems by @jerryz123 in #1458
• Support not instantiating the TileClockGater/ResetSetter PRCI control by @jerryz123 in #1459
• Check that HarnessClockInstantiator doesn't receive requests for similarly-named-clocks with different frequencies by @jerryz123 in #1460
• uniquify module names by @joey0320 in #1452

Full Changelog: 1.9.0...1.9.1