MIPS: JZ4750D: defconfig: Update a380/rzx50 defconfigs
Revert "Fix vt.h for JZSOC"

This reverts commit 813f67a17246b79bce0661197f2c1175a1266996.
Revert "Patch stackframe.h for JZRISC"

This reverts commit 92955cc345022bfefec9e807b929618ca60b8097.
Revert "Set NR_IRQS to 256 in arch/mips/include/asm/mach-generic/irq.h"

This reverts commit 025ba52f87dcd1d897f23d5f28ad11b2eb07e78a.
jzchar: JZ4750D: Remove TCSM, it does nothing anyway