x86: bayleybay: Adjust CONFIG_TEXT_BASE

x86: bayleybay: Adjust CONFIG_TEXT_BASE

At present U-Boot no longer builds as a complete rom for bayleybay.

    BINMAN  .binman_stamp
  Wrote map file './rom.map' to show errors
  binman: Section '/binman/rom': contents size 0x814706 (8472326) exceeds section size 0x800000 (8388608)

Checking rom.map we see 'fdtmap' section is overlapped with
'intel-vga' and 'intel-fsp' sections:

  <none>     fffa2150  0002a000  u-boot-ucode
  <none>     fffb0000  00010000  intel-vga
  <none>     fffc0000  00038000  intel-fsp
  <none>     fffcc150  00000539  fdtmap

Let's adjust CONFIG_TEXT_BASE to allow more space for U-Boot codes.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>