[XS] Change in coreboot[main]: i2c/drivers/generic: Return ROTM in a package

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/83721?usp=email )

Change subject: i2c/drivers/generic: Return ROTM in a package
......................................................................

i2c/drivers/generic: Return ROTM in a package

The ROTM method should return a package:

```
  Name (RBUF, Package (0x03)
  {
    "0 1 0",
    "1 0 0",
    "0 0 1"
  })
  Return (RBUF)
```

Adjust the acpigen to do this.

Change-Id: Id493f6955c1d0dc3449402262a8575091a828226
Signed-off-by: Sean Rhodes 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83721
Tested-by: build bot (Jenkins) 
Reviewed-by: Matt DeVillier 
---
M src/drivers/i2c/generic/generic.c
1 file changed, 3 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Matt DeVillier: Looks good to me, approved

diff --git a/src/drivers/i2c/generic/generic.c b/src/drivers/i2c/generic/generic.c
index 1875bac..27bef49 100644
--- a/src/drivers/i2c/generic/generic.c
+++ b/src/drivers/i2c/generic/generic.c
@@ -149,6 +149,7 @@
    /* Rotation Matrix */
    if (config->has_rotation_matrix) {
    	acpigen_write_method("ROTM", 0);
+		acpigen_write_name("RBUF");
    	acpigen_write_package(3);

for (int i = 0; i < 3; i++) {
@@ -160,6 +161,8 @@

acpigen_write_string(matrix_row);
    	}
+		acpigen_pop_len();
+		acpigen_write_return_namestr("RBUF");

acpigen_pop_len();
    	acpigen_pop_len();