vgsp: m72/m73 - local-memory context block (SKEDCHECK05 fix), SKED transition recorder, sysmem instance selector

m72: append the vendor turingLocalMemUpdate block (SET_SHADER_LOCAL_MEMORY_A/B
0x790/0x794, NON_THROTTLED_A/B 0x2e4/0x2e8, WINDOW_A/B 0x7b0/0x7b4) to the
forwarded GR launch prelude; without it the channel local-memory state is zero
and the m64-m69 sampler shows SKED_HWW_ESR bit12 = SKEDCHECK05
LOCAL_MEMORY_TOTAL_SIZE latching while the CWD entry is allocated then
deallocated. Base/per-TPC size are module params for A/B.

m72: change-detecting SKED transition recorder in the launch poll (CWD_T0/1/2,
HWW_INFO_1/2, ACTIVITY, HWW_ESR, GRFIFO, FECS current/new/ctxsw status) and
extended post-mortem readbacks (HWW_ESR_EN, INFO_1/2/3, CWD_T2, watermarks).

m72-r2 sampler result: the QMD enters SKED (CWD_T0=0x11300 STATUS=ACTIVE,
CWD_T1=0x1070) and HWW_ESR stays 0 with the lmem block, but the FECS context
load never completes: NEW_CTX=0x001f42b0 (V7 FBMEM instance, VALID=0) then
CURRENT=0; the task frees (CWD_T0=0x12000 DEP=PENDING_TASK_COMPLETE). m63
(sysmem instance) had VALID=1 on the same load. m73 adds the sysmem
instance/RAMFC selector (gsp_phys_rmcall_gr_inst_sys; default 0 = FBMEM
capture shape) for the A/B.

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