boards: rv-virt: Assign dedicated text/heap area in knsh64/defconfig

Summary:
- This commit assigns dedicated text/heap areas that improve
  stability issues with rv-virt:knsh64

Impact:
- None

Testing:
- Tested with qemu-6.2

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

boards/risc-v/qemu-rv/rv-virt/configs/knsh64/defconfig

@@ -25,9 +25,9 @@ CONFIG_ARCH_CHIP_QEMU_RV_ISA_A=y
 CONFIG_ARCH_CHIP_QEMU_RV_ISA_C=y
 CONFIG_ARCH_CHIP_QEMU_RV_ISA_M=y
 CONFIG_ARCH_DATA_NPAGES=128
-CONFIG_ARCH_DATA_VBASE=0xC0000000
+CONFIG_ARCH_DATA_VBASE=0xC0100000
 CONFIG_ARCH_HEAP_NPAGES=128
-CONFIG_ARCH_HEAP_VBASE=0x00000000
+CONFIG_ARCH_HEAP_VBASE=0xC0200000
 CONFIG_ARCH_INTERRUPTSTACK=2048
 CONFIG_ARCH_KERNEL_STACKSIZE=3072
 CONFIG_ARCH_PGPOOL_MAPPING=y
@@ -36,8 +36,8 @@ CONFIG_ARCH_PGPOOL_SIZE=4194304
 CONFIG_ARCH_PGPOOL_VBASE=0x80400000
 CONFIG_ARCH_RISCV=y
 CONFIG_ARCH_STACKDUMP=y
-CONFIG_ARCH_TEXT_NPAGES=0
-CONFIG_ARCH_TEXT_VBASE=0x00000000
+CONFIG_ARCH_TEXT_NPAGES=128
+CONFIG_ARCH_TEXT_VBASE=0xC0000000
 CONFIG_ARCH_USE_MMU=y
 CONFIG_ARCH_USE_MPU=y
 CONFIG_ARCH_USE_S_MODE=y