download: Replace Xiaomi SM7150 devices with generic device

Signed-off-by: Jens Reidel <adrian@travitia.xyz>

config/download.py

@@ -33,6 +33,11 @@ table = {
             "name": "Generic MSM8953",
             "vendor": "Generic",
         },
+        "qcom-sm7150": {
+            "name": "Generic SM7150",
+            "vendor": "Generic",
+            "not_in_stable": True
+        },
         "generic-x86_64": {
             "name": "Generic x86_64 EFI System",
              "vendor": "Generic",
@@ -189,20 +194,10 @@ table = {
             "name": "Xiaomi Pocophone F1",
             "vendor": "Xiaomi",
         },
-        "xiaomi-davinci": {
-            "name": "Xiaomi Mi 9T / Redmi K20",
-            "vendor": "Xiaomi",
-            "not_in_stable": True,
-        },
         "xiaomi-scorpio": {
             "name": "Xiaomi Mi Note 2",
             "vendor": "Xiaomi",
         },
-        "xiaomi-surya": {
-            "name": "Xiaomi POCO X3 NFC",
-            "vendor": "Xiaomi",
-            "not_in_stable": True,
-        },
         "xiaomi-wt88047": {
             "name": "Xiaomi Redmi 2",
             "vendor": "Xiaomi",