common: Bump the buffer size

1024 is too small for many kernel string limits (i.e. PATH_MAX, which is
4096).

Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>

aya-log-common/src/lib.rs

@@ -1,6 +1,6 @@
 #![no_std]
 
-pub const LOG_BUF_CAPACITY: usize = 1024;
+pub const LOG_BUF_CAPACITY: usize = 8192;
 
 pub const LOG_FIELDS: usize = 7;