Increase link image size to 40KB
Increase link image size to 40KB

with x86 power module enabled, it no longer fits in 32KB.

Signed-off-by: Randall Spangler <rspangler@chromium.org>

BUG=none
TEST=make

Change-Id: I38c9054efd8a072cc5800cc87936e53e2df00e58

mtk09422/chromiumos-platform-ec,eatbyte/chromium-ec,coreboot/chrome-ec,fourier49/BZ_DEV_EC,thehobn/ec,md5555/ec,gelraen/cros-ec,akappy7/ChromeOS_EC_LED_Diagnostics,longsleep/ec,fourier49/BZ_DEV_EC,coreboot/chrome-ec,coreboot/chrome-ec,fourier49/BZ_DEV_EC,akappy7/ChromeOS_EC_LED_Diagnostics,gelraen/cros-ec,longsleep/ec,akappy7/ChromeOS_EC_LED_Diagnostics,md5555/ec,alterapraxisptyltd/chromium-ec,fourier49/BIZ_EC,coreboot/chrome-ec,thehobn/ec,coreboot/chrome-ec,mtk09422/chromiumos-platform-ec,md5555/ec,mtk09422/chromiumos-platform-ec,eatbyte/chromium-ec,eatbyte/chromium-ec,longsleep/ec,fourier49/BIZ_EC,fourier49/BIZ_EC,md5555/ec,coreboot/chrome-ec,mtk09422/chromiumos-platform-ec,eatbyte/chromium-ec,akappy7/ChromeOS_EC_LED_Diagnostics,thehobn/ec,alterapraxisptyltd/chromium-ec,alterapraxisptyltd/chromium-ec,fourier49/BZ_DEV_EC,alterapraxisptyltd/chromium-ec,gelraen/cros-ec,gelraen/cros-ec,akappy7/ChromeOS_EC_LED_Diagnostics,longsleep/ec,thehobn/ec,fourier49/BIZ_EC