refactor: refactor RTL paths and update test descriptions

- Updated RTL paths in various files to remove the 'ribp' prefix, reflecting the new directory structure.
- Modified test descriptions to remove version indicators (e.g., V2, V3) for clarity and consistency.
- Adjusted file references in scripts and tests to align with the new peripheral and multimedia directory structure.
- Added a new test to ensure repository layout invariants, confirming the absence of deprecated paths.

tests/test_memory_map.py

@@ -211,8 +211,8 @@ def test_sysctrl_fault_registers_record_and_clear_pending(tmp_path: Path) -> Non
                 str(ROOT / "rtl/managed/clusterip/common/rtl/interface/ribp_if.sv"),
                 str(ROOT / "rtl/managed/clusterip/common/rtl/utils/register.sv"),
                 str(ROOT / "rtl/managed/clusterip/common/rtl/cdc/cdc_sync.sv"),
-                str(ROOT / "rtl/ip/ribp/peripheral/pll_ctrl_if.sv"),
-                str(ROOT / "rtl/ip/ribp/peripheral/sysctrl.sv"),
+                str(ROOT / "rtl/ip/peripheral/pll_ctrl_if.sv"),
+                str(ROOT / "rtl/ip/peripheral/sysctrl.sv"),
                 str(ROOT / "tests/rtl/sysctrl_fault_tb.sv"),
                 "",
             ]
@@ -265,9 +265,9 @@ def test_pll_controller_reconfigures_and_falls_back_to_the_safe_clock(tmp_path:
                 str(ROOT / "rtl/managed/clusterip/common/rtl/clkrst/rst_sync.sv"),
                 str(ROOT / "rtl/managed/clusterip/common/rtl/clkrst/counter.sv"),
                 str(ROOT / "rtl/managed/clusterip/common/rtl/utils/edge_det.sv"),
-                str(ROOT / "rtl/ip/ribp/peripheral/pll_ctrl_if.sv"),
-                str(ROOT / "rtl/ip/ribp/peripheral/clint_timebase.sv"),
-                str(ROOT / "rtl/ip/ribp/peripheral/sysctrl.sv"),
+                str(ROOT / "rtl/ip/peripheral/pll_ctrl_if.sv"),
+                str(ROOT / "rtl/ip/peripheral/clint_timebase.sv"),
+                str(ROOT / "rtl/ip/peripheral/sysctrl.sv"),
                 str(ROOT / "rtl/tech/tc_clk.sv"),
                 str(ROOT / "rtl/tech/tc_pll.sv"),
                 str(ROOT / "rtl/mini/top/rcu.sv"),
@@ -338,7 +338,7 @@ def test_pll_controller_reconfigures_and_falls_back_to_the_safe_clock(tmp_path:
 
 
 def test_sysctrl_does_not_expose_unused_i2c_or_qspi_select_registers() -> None:
-    rtl = (ROOT / "rtl/ip/ribp/peripheral/sysctrl.sv").read_text(encoding="utf-8")
+    rtl = (ROOT / "rtl/ip/peripheral/sysctrl.sv").read_text(encoding="utf-8")
     header = (ROOT / "crt/include/retrosoc/core/soc.h").read_text(encoding="utf-8")
 
     for symbol in (