Revert BASE_ERRPERMB

Constant value reverted pending more tests
on different video formats.

Change-Id: I07d11a0e0185e60724698c835416caf2e0774e61

vp8/encoder/firstpass.c

diff --git a/vp8/encoder/firstpass.c b/vp8/encoder/firstpass.c
index 0c79ade..4889916 100644
--- a/vp8/encoder/firstpass.c
+++ b/vp8/encoder/firstpass.c
@@ -903,7 +903,7 @@
 }
 extern const int vp8_bits_per_mb[2][QINDEX_RANGE];
 
-#define BASE_ERRPERMB   100
+#define BASE_ERRPERMB   150
 static int estimate_max_q(VP8_COMP *cpi, double section_err, int section_target_bandwitdh, int Height, int Width)
 {
     int Q;