isl: Generate isl_format_layout.c

isl: Generate isl_format_layout.c

Generate an array of struct isl_format_layout, using
isl_format_layout.csv as input.

Each entry follows the patten:

   [ISL_FORMAT_R32G32B32A32_FLOAT] = {
      ISL_FORMAT_R32G32B32A32_FLOAT,
      .bs = 16, .bpb = 128,
      .bw = 1, .bh = 1, .bd = 1,
      .channels = {
          .r = { ISL_SFLOAT, 32 },
          .g = { ISL_SFLOAT, 32 },
          .b = { ISL_SFLOAT, 32 },
          .a = { ISL_SFLOAT, 32 },
          .l = {},
          .i = {},
          .p = {},
      },
      .colorspace = ISL_COLORSPACE_LINEAR,
      .txc = ISL_TXC_NONE,
   },