Update mmcv version upper bound (#9215)

docs/en/faq.md

@@ -10,7 +10,7 @@ We list some common troubles faced by many users and their corresponding solutio
 
 | MMDetection version |        MMCV version        |
 | :-----------------: | :------------------------: |
-|       master        | mmcv-full>=1.3.17, \<1.7.0 |
+|       master        | mmcv-full>=1.3.17, \<1.8.0 |
 |       2.25.3        | mmcv-full>=1.3.17, \<1.7.0 |
 |       2.25.2        | mmcv-full>=1.3.17, \<1.7.0 |
 |       2.25.1        | mmcv-full>=1.3.17, \<1.6.0 |

docs/zh_cn/get_started.md

@@ -11,7 +11,7 @@ MMDetection 和 MMCV 版本兼容性如下所示，需要安装正确的 MMCV
 
 | MMDetection 版本 |         MMCV 版本          |
 | :--------------: | :------------------------: |
-|      master      | mmcv-full>=1.3.17, \<1.7.0 |
+|      master      | mmcv-full>=1.3.17, \<1.8.0 |
 |      2.25.3      | mmcv-full>=1.3.17, \<1.7.0 |
 |      2.25.2      | mmcv-full>=1.3.17, \<1.7.0 |
 |      2.25.1      | mmcv-full>=1.3.17, \<1.6.0 |

mmdet/__init__.py

@@ -17,7 +17,7 @@ def digit_version(version_str):
 
 
 mmcv_minimum_version = '1.3.17'
-mmcv_maximum_version = '1.7.0'
+mmcv_maximum_version = '1.8.0'
 mmcv_version = digit_version(mmcv.__version__)