Libs/libc: Import libc with newlib and AML version for riscv to RTOS SDK [1/1]

PD#SWPL-61628

Problem:
Import libc with newlib and AML version for riscv to RTOS SDK.

Solution:
Import libc with newlib and AML version for riscv to RTOS SDK.

Verify:
T5D_AM301

Change-Id: I1833cbedbfc5ad3c1d5c56b66137b84e646e5112
Signed-off-by: Xiaohu.Huang <xiaohu.huang@amlogic.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..2b1c7a6
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,5 @@
+enable_language(C CXX ASM)
+
+add_subdirectory(aml)
+add_subdirectory(newlib)
+