Increase CONFIG_FRAME_WARN=2048 to fix build error

LG added a lot of variables to snd_ioctl and frame-larger-than must be increaded

arch/arm/mach-msm/qdsp5/snd.c: In function 'snd_ioctl':
arch/arm/mach-msm/qdsp5/snd.c:1135:1: warning: the frame size of 1296 bytes is larger than 1024 bytes [-Wframe-larger-than=]
error, forbidden warning: snd.c:1135
make[2]: *** [arch/arm/mach-msm/qdsp5/snd.o] Error 1
make[1]: *** [arch/arm/mach-msm/qdsp5] Error 2

Change-Id: Ibcd8f92c659e32e6b84ae2bff13bf4863280c81c